KASPER KSP-A48.2
MRP - Rs. 59,900
KASPER KSP-A48.2 4-in, 8-out digital signal processor, dual DSP, 32-bit / 768 kHz A/D, 118 dB SNR, 1U. Available in India from Shivansh Electronics, Kolkata, West Bengal, India.
VISUAL GUIDE — See Every Photo, Spec & Setup Step (PDF)
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Audio
| Inputs | 4 |
| Outputs | 8 |
| Total harmonic distortion (20 Hz - 20 kHz at +4 dBu) | Below 0.003 % |
| Frequency response (20 Hz - 20 kHz at +4 dBu) | +0 / -0.3 dB |
| Signal‑to‑noise ratio | 118 dB A‑weighted |
| Noise floor | Below -90 dBu |
| Dynamic range (20 Hz - 20 kHz, 0 dB) | Above 116 dB |
| Maximum gain (input to output) | 48 dB |
| Maximum delay (input to output) | 750 ms |
| Channel separation (at 1 kHz) | Above 80 dB |
| Common mode rejection ratio | 60 Hz above 100 dB at +20 dBu |
Inputs and outputs
| Input impedance | Balanced 20 kΩ / unbalanced 10 kΩ |
| Output impedance | Balanced 100 Ω / unbalanced 50 Ω |
| Input gain range | -80 dB to +12 dB |
| Output gain range | -80 dB to +12 dB |
Conversion and processing
| A/D converter | 32‑bit, 768 kHz sampling rate |
| D/A converter | 24‑bit, 192 kHz sampling rate |
| DSP | Dual DSP architecture, 500 MHz main frequency |
| DSP bit width | 32/40/64‑bit floating point, dual core |
Physical
| Size | 1U |
| Power consumption | 220 V, 22 W |
Product overview
The KASPER KSP-A48.2 is a four-in, eight-out digital signal processor: a powerful, precision-engineered audio processing solution for advanced sound system control and optimisation.
Equipped with a high-performance dual DSP architecture, the KSP-A48.2 delivers exceptional processing speed, accuracy and flexibility, enabling detailed tuning and customisation for professional audio environments. It is ideal for auditoriums, live sound and events, houses of worship, recording studios and commercial installations.
| Balanced XLR | 4 in / 8 out |
| SNR, A‑weighted | 118 dB |
| A/D conversion | 32‑bit / 768 kHz |
| Maximum delay | 750 ms |
Key features
- Advanced digital signal processing
- High dynamic range and low noise: SNR 118 dB A-weighted, noise floor below -90 dBu
- Precise audio control and tuning
- Multi-input and multi-output configuration: 4 balanced XLR inputs, 8 balanced XLR outputs
- Wide frequency response: 20 Hz - 20 kHz, +0 / -0.3 dB
- DSP FIR filters (KASPER catalogue)
- 32-bit / 768 kHz A/D and 24-bit / 192 kHz D/A conversion
- USB on the front; RJ45 and RS232 on the rear
Clean, precise processing
THD stays below 0.003 % (20 Hz - 20 kHz at +4 dBu), dynamic range exceeds 116 dB and channel separation exceeds 80 dB at 1 kHz. Maximum gain from input to output is 48 dB and maximum delay is 750 ms; input and output gain are adjustable from -80 dB to +12 dB.
Front panel
The front panel carries INPUT and OUTPUT level meters with CH EDIT buttons, a display (panel marked DIGITAL AUDIO MATRIX SYSTEM), a rotary ENTER control, function keys BACK, DELAY, GATE / COMP, MATRIX, GEQ/DEQ, PEQ, XOVER, PRESET and SETTING, and a USB port.
Connections and control
The rear panel has 4 balanced XLR inputs (CHANNEL INPUT A to D), 8 balanced XLR outputs (CHANNEL OUTPUT 1 to 8), an RJ45 network port, an RS232 serial port, the mains socket and the power switch. PC control software is available for download on the KASPER product page.
In the box
- KSP-A48.2 digital signal processor
KASPER KSP-A48.2: frequently asked questions
How many inputs and outputs does the KSP-A48.2 have?
4 inputs and 8 outputs, all on XLR connectors; balanced input impedance 20 kΩ, balanced output impedance 100 Ω.
What converters does it use?
32-bit A/D conversion at 768 kHz and 24-bit D/A conversion at 192 kHz, with a 500 MHz dual-core floating-point DSP.
How can it be controlled?
From the front panel keys and display, or from a computer with the PC control software available on the KASPER product page; the unit has USB, RJ45 and RS232 ports.
How much power does it use?
220 V, 22 W.
Where can I buy the KASPER KSP-A48.2 in India?
The KASPER KSP-A48.2 is available from Shivansh Electronics, Kolkata, West Bengal, India, with delivery across India.
Workflow 1: Auditorium loudspeaker system
Processing between the mixer and the amplifiers of a hall.
Connections
| Connect | To |
|---|---|
| Mixer outputs | CHANNEL INPUT A to D (XLR) |
| Amplifier inputs | CHANNEL OUTPUT 1 to 8 (XLR) |
Setup
- Connect the mixer outputs to the inputs.
- Connect the outputs to the amplifiers.
- Set up the processing from the front panel or the PC software.
Tip: 4 in / 8 out with a matrix.
Workflow 2: Live sound and events
System tuning for a touring or event rig.
Connections
| Connect | To |
|---|---|
| Mixer main outputs | XLR inputs |
| Main, sub and monitor amplifiers | XLR outputs |
Setup
- Route the inputs to the outputs.
- Set crossover, EQ and delay for each output.
- Save the set-up as a preset.
Tip: Front panel keys include XOVER, DELAY and EQ functions.
Workflow 3: Houses of worship
Speech clarity and even coverage.
Connections
| Connect | To |
|---|---|
| Mixer | XLR inputs |
| Front and delay loudspeaker amplifiers | XLR outputs |
Setup
- Assign outputs to each loudspeaker zone.
- Set delay for distant loudspeakers.
- Fine-tune EQ for speech.
Tip: Maximum delay 750 ms.
Workflow 4: Recording studios
Monitor system tuning.
Connections
| Connect | To |
|---|---|
| Monitor outputs | XLR inputs |
| Studio monitors and subwoofer | XLR outputs |
Setup
- Connect the monitor feed.
- Set crossover and EQ.
- Store the settings.
Tip: Wide frequency response: +0 / -0.3 dB, 20 Hz - 20 kHz.
Workflow 5: Commercial installations
Fixed systems in malls, hotels and offices.
Connections
| Connect | To |
|---|---|
| Background music and paging sources | XLR inputs |
| Zone amplifiers | XLR outputs |
Setup
- Route sources to zones with the matrix.
- Set levels per output.
- Save presets for different times of day.
Tip: Input and output gain adjustable from -80 dB to +12 dB.
Workflow 6: Remote set-up from a computer
Installers configuring from a PC.
Connections
| Connect | To |
|---|---|
| Computer | USB (front) or RJ45 (rear) |
| Control system | RS232 (rear) |
Setup
- Install the PC control software from the KASPER product page.
- Connect the computer.
- Configure and save the set-up.
Tip: The software is a free download on kasperconnect.com.
