{"product_id":"motu-m4-copy","title":"MOTU M4","description":"\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e1. PRODUCT OVERVIEW\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe MOTU M4 is a four-input, four-output desktop USB-C audio interface and the mid-tier model in MOTU's M-Series lineup, sitting between the two-channel M2 and the six-channel M6. Where the M2 targets solo artists and singer-songwriters who need two channels of professional-grade capture, the M4 is designed for producers, small bands, content creators, and home studio engineers who regularly need to record multiple sources simultaneously, connect professional outboard processing, or route audio to multiple independent destinations. MOTU describes the product with the same headline claim as the M2: \"best in class audio quality, speed, and metering\" — and uniquely for the M4, each of those attributes is further amplified by the additional I\/O that makes the interface genuinely usable for four-channel production.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe M4's most significant differentiator from the M2 — and the feature that most directly determines which model an engineer should select — is its analogue input architecture. Inputs 1 and 2 are combo XLR\/TRS jacks routed through THAT 6263 microphone preamplifier circuits identical to those in the M2, providing 60 dB of gain, independent 48V phantom power, and a measured −129 dBu EIN. Inputs 3 and 4, however, are dedicated balanced 1\/4\" TRS line inputs — a genuinely distinct signal path with appropriate impedance characteristics for connecting professional outboard equipment such as compressors, equalisers, external preamplifiers, synthesisers with balanced outputs, or the line outputs of other audio interfaces. This makes the M4 not merely a two-channel interface with extra inputs bolted on, but a four-channel recording tool with a properly differentiated input architecture.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn the output side, the M4 provides four balanced 1\/4\" TRS outputs — double the M2's two — plus four mirrored RCA outputs. The four TRS outputs are all DC-coupled and driven by the same ESS Sabre32 Ultra™ DAC technology responsible for the measured 120 dB(A) dynamic range that places the M4's converters in the company of interfaces costing several times as much. Having four independent output channels opens up workflows unavailable on the M2: dual stereo monitoring (switching between two sets of reference monitors), 5.1 or quadraphonic monitoring (with appropriate routing), and sending independent headphone or cue mixes to a second amplifier or headphone distribution system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eA hardware feature exclusive to the M4 within the M-Series is the Input Monitor Mix knob on the front panel — a physical control that sets the blend between live input signals (coming directly from the hardware monitoring path) and the computer playback mix. This is a meaningful ergonomic and workflow improvement over the M2, which achieves the same blend entirely through software. Being able to quickly adjust the performer's monitoring blend with a single hardware knob without touching the DAW or the computer is a real-world usability advantage during tracking sessions. Combined with the M4's full-colour LCD metering, independent gain encoders, and independent phantom power buttons, the front panel gives the working engineer a complete and immediately readable picture of all four input and four output levels at a glance.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e2. AUDIO QUALITY \u0026amp; CONVERTER TECHNOLOGY\u003c\/span\u003e\u003c\/h5\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e2.1 DAC: ESS Sabre32 Ultra™ Technology\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe digital-to-analogue converter section of the MOTU M4 is driven by the same ESS ES9016S chip used in the M2 — a member of the ESS Sabre32 Ultra™ family renowned in both consumer Hi-Fi and professional audio for exceptionally low noise floors and distortion figures. The ES9016S employs ESS's patented Hyperstream™ Delta-Sigma modulation architecture with a 32-bit processing core and the Time Domain Jitter Eliminator™ circuit, which suppresses the clock jitter that is the primary source of DAC-output distortion in USB-connected interfaces. MOTU's output stage — which now drives four output channels rather than two — achieves the same measured 120 dB(A) dynamic range on the balanced TRS outputs that the M2 achieves, confirming that the additional output channels are driven with equal care in the analogue stage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAll four balanced TRS outputs of the M4 are DC-coupled, which has two important implications. First, it means the output stage passes signals all the way down to 0 Hz, making the outputs suitable for sending Control Voltage (CV) signals from DAW plugins to Eurorack modular synthesiser modules. Second, it means there is no high-pass filtering at the output stage that would attenuate very low-frequency content in music or sound design material — the full bandwidth of the digital signal passes unmodified through the output stage.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e2.2 ADC: AKM AK5552VN\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAs in the M2, the analogue-to-digital conversion path in the M4 uses the AKM AK5552VN — a 192 kHz \/ 32-bit Delta-Sigma ADC from Asahi Kasei Microelectronics. This device delivers a measured input dynamic range of 115 dB(A) across all four analogue input channels. The ADC's noise floor, referred to the input, sits well below the self-noise of any professional microphone and below the noise contribution of the THAT 6263 preamp circuits on inputs 1 and 2 — confirming that the converter does not add any audible noise above the preamp floor in the signal chain.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e2.3 Mathematical Validation: Four-Channel Signal Chain\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe M4's specifications can be cross-validated across its four channels. For inputs 1 and 2 (mic preamp path): with −129 dBu EIN and 60 dB maximum gain, the preamp at maximum gain presents a noise floor of −129 dBu referred to input — the ADC's 115 dB(A) dynamic range (with a typical +20 dBu 0 dBFS reference yielding a noise floor of approximately −95 dBu) remains 34 dB lower than the preamp's own noise contribution, confirming the preamp — correctly — is the dominant noise source in the chain at high gain. For inputs 3 and 4 (line input path), with no additional preamplification, the ADC's 115 dB(A) dynamic range is the primary limiting factor on input dynamic range — appropriate for line-level sources which, by definition, present a significantly higher signal level than microphone sources. The output dynamic range of 120 dB(A) on the DAC path consistently exceeds the ADC's 115 dB(A) input dynamic range, meaning the output will always faithfully reproduce the full dynamic range of anything captured through the inputs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cspan\u003eConverter Technology Specifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDAC Chip\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eESS ES9016S (ESS Sabre32 Ultra™ family)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDAC Architecture\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eHyperstream™ 32-bit Delta-Sigma with Time Domain Jitter Eliminator™\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDAC Dynamic Range (datasheet)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e124 dB(A) (chip level)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eOutput Dynamic Range (measured)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e120 dB(A) — at all four balanced TRS outputs\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eOutput Channels Driven\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e4 (all DC-coupled balanced TRS outputs from same DAC chain)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eADC Chip\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAKM AK5552VN (\"Velvet Sound\" architecture)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eADC Architecture\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e32-bit Delta-Sigma, 192 kHz capable\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInput Dynamic Range (measured)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e115 dB(A) — across all four analogue input channels\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eBit Depth\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e24-bit (operational); 32-bit internal DAC processing\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSample Rates\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e44.1 \/ 48 \/ 88.2 \/ 96 \/ 176.4 \/ 192 kHz\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eHeadphone Amplifier IC\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOPA1688 (Texas Instruments)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eHeadphone Output Power\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eApprox. 50 mW into 32 Ω\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDC-Coupled Outputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes — all four balanced TRS outputs; suitable for CV\/modular use\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e3. MICROPHONE PREAMPS (INPUTS 1 \u0026amp; 2)\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe MOTU M4 features two microphone preamplifier circuits on inputs 1 and 2, each built around the THAT Corporation THAT 6263 IC — the same preamplifier used in the M2. The THAT 6263 is a transformerless, low-noise microphone preamplifier IC whose architecture minimises thermal noise and maximises common-mode rejection ratio (CMRR), making it highly effective at suppressing hum and electrical interference from balanced microphone cables in practical studio and location environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe measured −129 dBu EIN on both channels represents best-in-class performance for a USB interface in this price segment. To contextualise: a typical large-diaphragm condenser microphone such as the Neumann TLM 103 has a self-noise of 7 dB(A), which is equivalent to −122 dBu in the signal chain. This means the THAT 6263 preamps in the M4 are 7 dB quieter than one of the quietest microphones in the world, effectively rendering the preamp's noise contribution completely inaudible regardless of what microphone is connected. For broadcast dynamics such as the Shure SM7B, which require maximum gain (the M4 provides 60 dB), the ultra-low EIN means the SM7B's recorded output is limited only by the microphone's own noise floor, not the preamp.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEach combo XLR\/TRS input on the front panel accepts either a microphone via XLR (routing the signal through the THAT 6263 preamp at the selected gain) or an instrument via 1\/4\" TRS, where the input functions as a Hi-Z (high-impedance) input optimised for passive electric guitar and bass. The 48V phantom power is switchable independently per channel with a dedicated front-panel button and LED, enabling simultaneous use of a condenser microphone on one channel and a dynamic on the other without risk of phantom power feeding the dynamic microphone.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cspan\u003eMicrophone Preamp Specifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePreamp IC\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eTHAT Corporation THAT 6263\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eNumber of Mic Preamps\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2 (inputs 1 and 2 only)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInput Connectors (Ch 1\/2)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eXLR \/ 1\/4\" TRS combo jack (per channel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eXLR Mode\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMicrophone preamplifier (balanced, transformerless)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eTRS Mode\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eHi-Z instrument input (guitar \/ bass, unbalanced)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eEIN (Equivalent Input Noise)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e−129 dBu (measured, A-weighted)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMaximum Gain\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e60 dB\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eGain Range\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e0 dB to 60 dB (digital encoder, 1 dB steps)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003e48V Phantom Power\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes — independent switch and LED per channel (Ch 1 and Ch 2)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDirect (Hardware) Monitoring\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes — MON button per channel (Ch 1 and Ch 2)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMonitoring Modes\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMono (single input to both outputs) or Stereo\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInput Impedance (XLR)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNot specified by manufacturer (typical transformerless: approx. 2.4 kΩ balanced)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInput Impedance (Hi-Z TRS)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eHigh impedance — optimised for passive guitar\/bass\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e4. BALANCED LINE INPUTS (INPUTS 3 \u0026amp; 4)\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe most architecturally significant feature distinguishing the M4 from the M2 is the presence of two dedicated balanced 1\/4\" TRS line inputs on the rear panel, designated inputs 3 and 4. These are not combo jacks and do not route through microphone preamplifier circuits — they are purpose-built balanced line inputs with impedance characteristics appropriate for connecting professional outboard equipment, synthesisers with balanced outputs, the line outputs of other audio interfaces or mixers, and any other source delivering a +4 dBu nominal professional balanced line signal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe distinction between a Hi-Z instrument input and a balanced line input is technically fundamental and often confused by non-specialist users. A Hi-Z instrument input presents a very high impedance to the connected source (typically 1 MΩ or higher) to prevent loading the passive pickups of an electric guitar or bass — which need to see a high-impedance load to deliver their intended frequency response. A balanced line input, by contrast, presents a standard professional impedance (typically 10 kΩ balanced) to accept the low-impedance output of professional equipment correctly. Connecting a professional synthesiser with a balanced line output to a Hi-Z instrument input (as the M2 requires) will produce a technically functional but not ideally matched connection; the M4's dedicated line inputs on channels 3 and 4 provide the correct impedance match for these sources.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInputs 3 and 4 pass directly to the AKM AK5552VN ADC without additional preamplification — their gain is not adjustable via front-panel encoders. The signal level presented to the ADC from a professional +4 dBu line source is already appropriate for the converter's input range, meaning no additional gain is needed or appropriate. The 115 dB(A) ADC dynamic range on these inputs is the primary measure of their performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFor engineers building hybrid signal chains — where a hardware compressor or equaliser is inserted into the recording path, or where two different microphone preamplifiers (the M4's on-board THAT 6263 and a premium external preamp) feed the same recording session simultaneously — the M4's line inputs are the correct routing destination. Record the premium external preamp's output on channels 3 or 4 and the on-board preamp on channels 1 or 2, and the DAW receives four completely independent, simultaneous channels of professional-quality audio.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cstrong\u003eBalanced Line Input Specifications (Inputs 3 \u0026amp; 4)\u003c\/strong\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInput Connector (Ch 3\/4)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e1\/4\" TRS balanced (rear panel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInput Type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBalanced line input — no microphone preamp\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eLocation\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eRear panel\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eNominal Input Level\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e+4 dBu (professional balanced)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eGain Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFixed — no front-panel gain encoder for channels 3\/4\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003e48V Phantom Power\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNot available (not applicable — line inputs only)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eADC Chain\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAKM AK5552VN (same ADC as inputs 1\/2)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInput Dynamic Range\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e115 dB(A) (measured)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eImpedance\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eProfessional balanced line impedance (not specified by manufacturer)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSuitable Sources\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eHardware compressors, EQs, external preamps, synths (balanced), mixers, other interfaces\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e5. ANALOGUE OUTPUTS\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe MOTU M4 provides four balanced 1\/4\" TRS outputs on the rear panel — double the M2's two primary outputs — all driven by the ESS Sabre32 Ultra™ DAC and all DC-coupled. Outputs 1 and 2 form the primary stereo pair, typically assigned to the main studio monitors. Outputs 3 and 4 form a second stereo pair, providing the flexibility to connect a second set of reference monitors (such as a secondary pair of nearfields or a different speaker brand for reference comparison), an independent headphone amplifier for performer cue mixes, or to route to a summing mixer or outboard processor.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe practical workflow implications of four outputs are significant. A mastering engineer can monitor on two completely different speaker systems — switching between them at the DAW level — without any physical reconnection. A tracking engineer can send a performer a dedicated monitor mix through outputs 3 and 4 (via a headphone amplifier) while monitoring on studio monitors from outputs 1 and 2, with the performer and engineer hearing different mixes simultaneously. A 5.1-format audio post-production setup can assign the M4's four outputs to four of the six required channels (front left, front right, rear left, rear right), supplemented by a second interface or the headphone output for the centre and LFE channels.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAdditionally, four RCA outputs on the rear panel mirror the four TRS outputs at consumer (−10 dBV) levels, providing unbalanced connections for consumer equipment, DJ mixers with phono inputs, or supplementary monitoring systems without requiring additional DI boxes or line level converters.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cstrong\u003eAnalogue Output Specifications\u003c\/strong\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eNumber of TRS Outputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e4 (balanced 1\/4\" TRS, rear panel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eOutput Configuration\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2 stereo pairs (Outputs 1\/2 and Outputs 3\/4)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eOutput Type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBalanced, DC-coupled (all four)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDAC Chip\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eESS ES9016S (ESS Sabre32 Ultra™)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMeasured Dynamic Range\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e120 dB(A) — all four TRS outputs\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eNominal Output Level\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e+4 dBu (professional balanced)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDC Coupling\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes — all four outputs; suitable for CV\/modular synthesis use\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eNumber of RCA Outputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e4 (unbalanced, rear panel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRCA Output Configuration\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2 stereo pairs (mirroring TRS outputs 1\/2 and 3\/4)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRCA Output Level\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e−10 dBV (consumer unbalanced)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRCA Signal Source\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMirrors corresponding TRS outputs (not independently assignable)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eOutput Volume Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFront-panel master output encoder (applies to all four TRS outputs)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSecondary Monitor Pair Use\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOutputs 3\/4 can feed second set of monitors, headphone amp, or outboard processor\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e6. HEADPHONE OUTPUT\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe headphone output on the MOTU M4 is a 1\/4\" TRS stereo jack on the front panel, driven by the same OPA1688 operational amplifier and ESS Sabre32 Ultra™ DAC chain used in the M2. The output delivers approximately 50 mW into 32 Ω at low distortion, with a maximum output swing of approximately 3.3 Vrms, providing sufficient drive for high-impedance headphones including the Beyerdynamic DT 990 Pro (250 Ω) and the Sennheiser HD 650 (300 Ω). The headphone volume is controlled by a dedicated front-panel encoder, independent of the main output volume control.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAn important architectural nuance distinguishes the M4's headphone output from those of higher-end interfaces: the headphone output mirrors the main DAC output mix and does not support an independent cue mix distinct from the main outputs. However, in the context of the M4's four-output architecture, a practical workaround is available: the performer's cue mix can be routed to outputs 3 and 4 (and then to an external headphone amplifier), while the engineer monitors on outputs 1 and 2, effectively creating a two-mix capability without requiring the headphone output to carry a separate mix.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cspan\u003eHeadphone Output Specifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eConnector\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e1\/4\" TRS stereo (front panel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eAmplifier IC\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOPA1688 (Texas Instruments)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eConverter Chain\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eESS Sabre32 Ultra™ (same DAC as main outputs)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eApprox. 50 mW into 32 Ω\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMaximum Output Swing\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eApprox. 3.3 Vrms\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eVolume Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eIndependent front-panel encoder (separate from main output control)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eHeadphone Mix\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMirrors main output mix (no independent cue mix on headphone jack itself)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eImpedance Range\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e32 Ω to 300 Ω (suitable)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e7. INPUT MONITOR MIX KNOB\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOne of the M4's distinguishing hardware features — absent on the M2 — is a dedicated Input Monitor Mix knob on the front panel. This control sets the blend ratio between two signal sources: the live analogue input signals (arriving via the hardware direct monitoring path, bypassing the USB connection) and the playback mix from the host computer (arriving via the DAC from the DAW or other software). Rotating the knob toward one extreme sends only the live input signals to the outputs; rotating toward the other extreme sends only the computer playback to the outputs; the centre position blends both at equal levels.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUnderstanding why this hardware control is valuable requires understanding the fundamental monitoring challenge in recording sessions. During a tracking take, the performer needs to hear two things simultaneously: their own voice or instrument in real time (requiring zero latency to be natural) and the backing tracks from the DAW. The direct monitoring path of the M4 provides the performer's own signal at zero latency via the MON button, while the DAW playback comes through the DAC at the full RTL (2.5 ms). The Input Monitor Mix knob controls how much of each source the performer hears, allowing a quick, intuitive adjustment between \"I can barely hear myself over the backing track\" and \"I can only hear myself and nothing else\" without needing to touch the DAW software or the computer at all. For engineers working alone during self-recording sessions, this single knob replaces multiple mouse clicks in the DAW monitoring mixer, significantly reducing cognitive load during the creative flow of a performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cspan\u003eInput Monitor Mix Specifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eControl Type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAnalogue rotary knob (front panel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBlend between live input (direct monitor) and computer playback (DAC output)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eContinuous: full live input signal → centre blend → full computer playback\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSignal Path (Live)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAnalogue direct monitor — hardware, zero-latency (MON path)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSignal Path (Computer)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eESS Sabre32 Ultra™ DAC — 2.5 ms RTL at 96 kHz \/ 32-sample buffer\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eM2 Equivalent\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNot available on M2 — M4 exclusive feature\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePrimary Use\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eTracking sessions — performer adjusts live-vs-playback balance without touching DAW\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e8. DIRECT MONITORING \u0026amp; LOOPBACK\u003c\/span\u003e\u003c\/h5\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e8.1 Hardware Direct Monitoring\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEach of the two microphone\/instrument inputs (channels 1 and 2) has an independent MON button on the front panel that engages the hardware direct monitoring path. When active, the input signal passes through the M4's internal analogue circuitry directly to the main outputs and headphone output, completely bypassing the USB connection and the host DAW. This creates a zero-latency monitoring path for performers: the microphone or instrument is heard in real time, with no perceptible delay regardless of the DAW's buffer size. The Input Monitor Mix knob (Section 8) then blends this zero-latency signal with the DAW playback to give the performer their complete monitoring environment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe monitoring mode toggles between mono (a single input routed to both left and right output channels) and stereo (inputs 1 and 2 routed to left and right respectively). Stereo monitoring is the appropriate mode when recording two sources simultaneously and wanting each to appear in its correct stereo position in the monitoring mix.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e8.2 Loopback Channels\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe MOTU M4 driver provides two dedicated loopback channels — a stereo pair that captures whatever audio is being output by the host computer and feeds it back as an audio input source in the driver. These loopback channels are presented to the DAW and streaming software as an additional stereo input device, enabling streaming, podcasting, and VoIP recording workflows where both live microphone audio and computer-generated audio (game sound, music, phone caller audio) need to be simultaneously captured and mixed. The loopback implementation requires the MOTU M-Series driver on both Windows and macOS.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cstrong\u003eMonitoring \u0026amp; Loopback Specifications\u003c\/strong\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDirect Monitoring\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes — hardware analogue, zero-latency (Ch 1 and Ch 2 only)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMON Button\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eIndependent per channel (Ch 1 and Ch 2, front panel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMonitoring Mode\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMono or Stereo (software selectable)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInput Monitor Mix Knob\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eHardware blend: live input vs. computer playback (M4 exclusive)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eLoopback Channels\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2-channel stereo loopback\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eLoopback Requirements\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMOTU M-Series driver (Windows and macOS)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eLoopback Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eLive streaming, podcast, VoIP call capture, screen recording audio\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDirect Monitor Latency\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e~0 ms (analogue hardware path)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSoftware Monitor Latency\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2.5 ms RTL at 96 kHz \/ 32-sample buffer (with MOTU driver)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e9. MIDI INTERFACE\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe MOTU M4 includes a full 5-pin DIN MIDI interface on the rear panel — one MIDI IN and one MIDI OUT port — appearing in the host DAW and operating system as a USB-MIDI device via the same USB cable used for audio. This provides 16-channel MIDI connectivity with all standard MIDI devices, including vintage synthesisers, drum machines, MIDI controllers, hardware sequencers, and MIDI patchbays. The M4's MIDI interface is identical to the M2's in specification and capability; the inclusion of hardware 5-pin DIN ports (rather than USB-MIDI-only) ensures compatibility with gear that predates USB MIDI.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cspan\u003eMIDI Interface Specifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMIDI IN\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e1× 5-pin DIN (rear panel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMIDI OUT\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e1× 5-pin DIN (rear panel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMIDI Channels\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e16 IN \/ 16 OUT (standard MIDI)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMIDI Bandwidth\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e31.25 kbps (standard MIDI)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eUSB-MIDI Class\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUSB MIDI Class 1.0 compliant\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSysEx Support\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMIDI Clock\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eTransmit and receive\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eHost Connection\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eVia USB (same cable as audio — no separate MIDI USB port)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e10. COMPUTER CONNECTIVITY \u0026amp; USB PERFORMANCE\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe MOTU M4, like the M2, connects to the host computer via USB-C at USB 2.0 High Speed (480 Mbps). The increased channel count of the M4 — four inputs and four outputs compared to the M2's two-in \/ two-out — still falls well within USB 2.0's bandwidth ceiling at all supported sample rates up to 192 kHz. The practical maximum bandwidth requirement of four channels of 24-bit audio at 192 kHz (approximately 18.4 Mbps in each direction) represents less than 4% of USB 2.0's 480 Mbps theoretical maximum, leaving ample headroom for USB protocol overhead and other USB devices on the same bus.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe M4 ships with a USB-C to USB-A cable and is fully compatible with USB-C to USB-C connections for computers with USB-C-only ports. It is fully bus-powered, requiring no external power supply in studio or field use. For iOS use, a powered USB hub plus an Apple USB-C\/Lightning or USB-C\/USB-C adapter is required to supply the bus power the M4 needs, since the iPad cannot supply sufficient current over its port alone. The round-trip latency specification — 2.5 ms at 96 kHz with a 32-sample buffer under Windows with the MOTU M-Series driver — is identical to the M2, confirming that the additional I\/O channels have not compromised the driver's latency performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e10.1 Driver Architecture \u0026amp; Platform Compatibility\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn macOS, the M4 operates as a USB Audio Class 2.0 device without requiring any driver installation — the macOS Core Audio stack handles the device natively, providing immediate plug-and-play operation. The optional MOTU macOS driver is available for users who require the minimum 2.5 ms RTL; without the driver, Core Audio will operate the device at somewhat higher buffer sizes. On Windows, the MOTU M-Series driver is required and provides both ASIO (for professional DAWs) and WDM\/Wave (for general Windows audio applications) interfaces. The loopback channels — providing a software routing path for streaming and podcasting — are available on both platforms when the MOTU driver is installed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cspan\u003eComputer Connectivity Specifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eUSB Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUSB 2.0 High Speed (480 Mbps)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDevice Connector\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUSB-C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIncluded Cable\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUSB-C to USB-A (host cable)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eUSB-C to USB-C\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSupported (cable not included)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eBus Power\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes — fully bus-powered over USB\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003emacOS Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003emacOS 10.11 (El Capitan) or higher\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWindows Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWindows 10 or higher\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eiOS Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eiOS 9 or higher (requires powered USB hub + Apple adapter)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003emacOS Driver\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOptional (Core Audio UAC plug-and-play without; MOTU driver for 2.5 ms RTL)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWindows Driver\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eRequired — MOTU M-Series ASIO + WDM\/Wave driver\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRound-Trip Latency\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2.5 ms at 96 kHz, 32-sample buffer (with MOTU driver)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eUSB Audio Class\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUSB Audio Class 2.0 compliant\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eUSB Channel Count\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e4 analogue inputs + 4 analogue outputs + 2 loopback channels\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eASIO Support\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (Windows, via MOTU driver)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCore Audio Support\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (macOS, native)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e11. FRONT PANEL \u0026amp; LCD DISPLAY\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe front panel of the MOTU M4 is functionally similar to the M2 but extended to accommodate the additional inputs and the Input Monitor Mix knob. The full-colour 160×120 pixel LCD occupies the centre of the panel and displays simultaneous level meters for all four input channels and all four output channels — providing, in a single glance, the complete signal level picture of a four-channel recording session. On the M2, the LCD displays two input and two output channels; the M4 displays twice as many channels on the same-size display, using a more compact but still highly readable bar-graph format.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAll gain and volume controls are implemented as digital rotary encoders, with no analogue potentiometers. The encoders track position in 1 dB increments with logarithmic response and display their current settings on the LCD. The Input Monitor Mix knob is an analogue rotary control (not a digital encoder) — its position provides a direct, immediate, and tactile control over the monitoring blend that a digital encoder with menu navigation cannot replicate.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cspan\u003eFront Panel Controls \u0026amp; Display\u003c\/span\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eLCD Display\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFull-colour, 160×120 pixels\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMetering Channels\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAll 4 inputs + all 4 outputs simultaneously displayed\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInput Gain Encoders\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2× digital rotary encoder (Ch 1 and Ch 2 only — mic preamp channels)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMain Output Volume Encoder\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e1× digital rotary (master, applies to all four TRS outputs)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eHeadphone Volume Encoder\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e1× digital rotary (independent of main output)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInput Monitor Mix Knob\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e1× analogue rotary knob — blends live inputs vs. computer playback\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMON Buttons\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2× (one per mic\/instrument input channel — Ch 1 and Ch 2)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003e48V Phantom Power Buttons\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2× (one per mic channel — Ch 1 and Ch 2, with LED)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eHeadphone Jack\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e1× 1\/4\" TRS stereo (front panel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFront Input Connectors\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2× XLR\/TRS combo (Ch 1 and Ch 2)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eControl Step Size\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e1 dB increments (digital encoders), logarithmic response\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e12. STANDALONE OPERATION\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe M4, like the M2, supports standalone operation — powered by a USB-C power adapter without any host computer, operating as a standalone microphone preamplifier and monitor controller. With the MON buttons engaged and phantom power active as required, microphone signals pass from the combo inputs through the THAT 6263 preamp circuits, through the ESS Sabre32 converters, and to the four balanced TRS outputs. In this mode the Input Monitor Mix knob continues to function, allowing the operator to adjust the balance between the live input monitoring signal and any other source connected to the DAC input path. Standalone operation is practical for rehearsal, location preamp use, PA supplement, or any scenario where a high-quality two-channel preamplifier and four-channel output stage are needed without a computer.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cspan\u003eStandalone Operation Specifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eStandalone Power Source\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUSB-C power adapter (5V, standard USB, min. 500 mA)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eComputer Requirement\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNone\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eAvailable Functions (Standalone)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMic preamp (Ch 1\/2), phantom power, direct monitoring, main TRS\/RCA outputs, headphone output\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInput Monitor Mix (Standalone)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes — hardware knob continues to blend live input vs. other sources\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eUnavailable Functions (Standalone)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eA\/D conversion to digital, loopback, DAW recording, MIDI\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eUse Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eRehearsal preamp, PA supplement, portable monitor controller, FOH insert send\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e13. INCLUDED SOFTWARE BUNDLE\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe MOTU M4 ships with the same comprehensive software bundle included with the M2: MOTU Performer Lite (a full multi-track DAW with 100+ virtual instruments and professional audio effects), Ableton Live Lite 11 (loop-based production and performance), and 6+ GB of loops, one-shots, and sample content from MOTU, Big Fish Audio, Lucidsamples, and Loopmasters. This bundle provides a complete production environment out of the box; combined with the M4's four-channel I\/O, the user has the tools to record a full band (drums overhead + kick + snare + bass, for example), mix in the DAW, and master — all with included software.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cspan\u003eSoftware Bundle\u003c\/span\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDAW 1\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMOTU Performer Lite (full multi-track recording, MIDI, mixing, mastering)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDAW 2\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAbleton Live Lite 11 (Session + Arrangement View)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eVirtual Instruments\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e100+ instruments (pianos, guitars, drums, synths, orchestral, etc.)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSample Content\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e6+ GB loops, one-shots, sample packs\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSample Providers\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMOTU, Big Fish Audio, Lucidsamples, Loopmasters\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDelivery\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eDownload codes via MOTU account registration\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlatform\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003emacOS and Windows\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e14. BUILD QUALITY \u0026amp; FORM FACTOR\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe MOTU M4 uses an all-metal chassis construction — the same rugged build philosophy as the M2 — providing electromagnetic shielding, structural rigidity for portable use, and institutional durability for educational or rental environments. The unit is a compact desktop form factor with all rear-panel connectors running the TRS outputs, RCA outputs, line inputs (Ch 3\/4), USB-C, MIDI IN, and MIDI OUT, while front-panel connectors present the combo XLR\/TRS inputs and headphone jack for easy cable management in fixed installations. The slightly larger front panel compared to the M2 accommodates the additional controls required by the four-channel I\/O — the Input Monitor Mix knob, the four-channel LCD metering, and the four individual gain encoders for the output and headphone paths.\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 dir=\"ltr\" style=\"text-align: left;\"\u003e\u003cspan\u003ePhysical Specifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"216\"\u003e \u003ccol width=\"408\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\n\u003cp dir=\"ltr\" style=\"text-align: center;\"\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eChassis Material\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMetal (all-metal construction)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eForm Factor\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eDesktop (non-rack)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFront Connectors\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2× XLR\/TRS combo (inputs 1\/2), 1× 1\/4\" TRS headphone\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRear Connectors\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e4× 1\/4\" TRS balanced output, 4× RCA output, 2× 1\/4\" TRS balanced line input (Ch 3\/4), 1× USB-C, 1× MIDI IN, 1× MIDI OUT\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eBus Powered\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (USB bus power)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDimensions (approx.)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eApprox. 193 mm W × 47 mm H × 99 mm D (verify with MOTU spec sheet)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWeight (approx.)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eApprox. 360 g (verify with MOTU spec sheet)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eColour\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eDark grey \/ charcoal (anodised metal)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRubber Feet\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes — non-slip desktop use\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e15. M-SERIES FAMILY COMPARISON\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe M4 occupies a clearly defined position in the M-Series: it is the correct choice when two channels of microphone preamplification are required alongside two additional line-level inputs for outboard gear or secondary sources, when four independent output channels are needed for dual-monitor setups or performer cue mixes, or when the Input Monitor Mix hardware knob is preferable to software-only monitoring blending. The M2 remains the choice for compact, two-channel, minimal-footprint setups; the M6 is the step up for engineers requiring six inputs or a dedicated front-panel instrument input with switchable gain staging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable style=\"margin-left: auto; margin-right: auto;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"156\"\u003e \u003ccol width=\"156\"\u003e \u003ccol width=\"156\"\u003e \u003ccol width=\"156\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: center;\" scope=\"col\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFEATURES\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth style=\"text-align: center;\" scope=\"col\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMOTU M2\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth style=\"text-align: center;\" scope=\"col\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMOTU M4\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth style=\"text-align: center;\" scope=\"col\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eMOTU M6\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eTotal Analogue Inputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2 (combo XLR\/TRS)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e4 (2 combo + 2 balanced TRS line)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e6 (4 combo + 2 balanced TRS line)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMic Preamps\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eBalanced Line Inputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNone (Hi-Z only on TRS)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2 (inputs 3 \u0026amp; 4, rear panel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2 (inputs 5 \u0026amp; 6, rear panel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eAnalogue Outputs (TRS)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2 (balanced)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e4 (balanced)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e4 (balanced)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMirrored RCA Outputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2× RCA\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e4× RCA\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e—\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDAC Technology\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eESS Sabre32 Ultra™\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eESS Sabre32 Ultra™\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eESS Sabre32 Ultra™\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eOutput Dynamic Range\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e120 dB(A)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e120 dB(A)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e120 dB(A)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eEIN\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e−129 dBu\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e−129 dBu\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e−129 dBu\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eInput Monitor Mix Knob\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNo\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (hardware knob)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNot specified by MOTU\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDC-Coupled Outputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (2× TRS)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (4× TRS)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (4× TRS)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMIDI I\/O\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (5-pin DIN)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (5-pin DIN)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (5-pin DIN)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRTL @ 96 kHz \/ 32 smpl\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2.5 ms\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2.5 ms\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e2.5 ms\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"text-align: center;\"\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eBus Powered\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (USB)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (USB)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes (USB)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch5 dir=\"ltr\"\u003e\u003cspan\u003e16. IDEAL APPLICATIONS \u0026amp; USE CASES\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe MOTU M4's four-channel I\/O, dual-monitor output capability, balanced line inputs, and Input Monitor Mix hardware knob give it a notably broader workflow range than the M2. It excels wherever two channels of microphone capture plus two channels of line-level input are needed simultaneously, or wherever four independent output channels unlock monitoring, routing, or production flexibility unavailable on a two-output interface.\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eBand Self-Recording (Small Ensemble):\u003c\/strong\u003e Two vocalists or vocalists plus instrument on mic inputs 1 and 2, with a keyboard or drum machine stereo line output on line inputs 3 and 4 — the M4 captures a full four-channel live performance simultaneously.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eDual-Monitor Mixing:\u003c\/strong\u003e Outputs 1 and 2 to primary reference monitors; outputs 3 and 4 to secondary monitors or NS-10 style nearfields. Switch between monitor pairs in the DAW without physical reconnection.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eOutboard Gear Integration:\u003c\/strong\u003e External compressor or equaliser inserted on inputs 3\/4 — premium hardware processing at recording stage, with the on-board THAT 6263 preamps handling microphone capture on inputs 1\/2.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003ePerformer + Engineer Separate Monitoring:\u003c\/strong\u003e Engineer monitors on outputs 1\/2 (main mix); performer's cue feed goes to outputs 3\/4 via a headphone amplifier (separate monitoring mix achievable by DAW routing).\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003ePodcast Production with Multiple Hosts:\u003c\/strong\u003e Two host microphones on inputs 1 and 2, loopback capturing remote guest audio, with four outputs providing independent monitoring positions for two hosts.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eHome Studio Hip-Hop \/ Electronic Production:\u003c\/strong\u003e Drum machine or sampler stereo feed on line inputs 3\/4; vocal microphone on input 1; synth mono feed on input 2 — four-source simultaneous capture in a compact setup.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eElectronic Music \u0026amp; Modular Synthesis:\u003c\/strong\u003e All four DC-coupled outputs route CV and Gate signals from DAW CV plugins to Eurorack modular synthesiser modules while simultaneously monitoring on a separate monitor output.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eVideo Production \u0026amp; YouTube Content:\u003c\/strong\u003e Two microphones for interview or multi-host format, plus a line-level return from a video camera or field recorder, all captured simultaneously.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eLive Streaming with Complex Audio Routing:\u003c\/strong\u003e Four outputs allow stream output (to encoder) on one pair and studio monitoring on a second pair, without audio routing conflicts.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eEducational Studio:\u003c\/strong\u003e Four-channel metering on the LCD demonstrates four-source recording, gain staging, and monitoring routing to students simultaneously on a single, affordable device.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eLocation Recording with Outboard Preamp:\u003c\/strong\u003e Use the M4's THAT 6263 preamps on inputs 1\/2 for primary sources while a premium portable preamp feeds the line inputs 3\/4 — mixed-preamp location capture.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003eHouse of Worship (Small Scale):\u003c\/strong\u003e Two directional microphones on speaker and lector (inputs 1\/2), plus playback track return (line inputs 3\/4), with the worship monitor and FOH on outputs 1\/2 and 3\/4 respectively.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003cstrong\u003ePost-Production ADR \/ Voiceover:\u003c\/strong\u003e Actor microphone on input 1; click track or guide audio on line input 3; dialogue and music on outputs 1\/2 to studio monitors; director's talkback feed on output 3\/4.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e","brand":"Shivansh Electronics","offers":[{"title":"Default Title","offer_id":52776022802799,"sku":"MOTU-M4","price":27800.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/4766\/0399\/files\/MOTU-M4-USB-C-Audio-Interface-Front-Rear-Panel-Product-Image.png?v=1774531753","url":"https:\/\/shivanshelectronics.in\/products\/motu-m4-copy","provider":"Shivansh Electronics","version":"1.0","type":"link"}