

DPA ST4015A Matched Stereo Pair, 4015A Wide Cardioid Microphones
PRICE - Rs. 5,50,285
DPA ST4015A matched stereo pair of 4015A wide cardioid pencil microphones, ±1 dB, phase below 10°, for ensembles, piano and voice. Available in India from Shivansh Electronics, Kolkata, West Bengal, India.
VISUAL GUIDE — See Every Photo, Spec & Setup Step (PDF)
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Acoustics (each 4015A)
| Directional pattern | Wide cardioid |
| Principle of operation | Pressure gradient |
| Cartridge type | Pre-polarised condenser |
| Frequency response | 20 Hz - 20 kHz |
| Effective frequency range ±2 dB, at 60 cm (23.6 in) | 40 Hz - 20 kHz |
| Sensitivity, nominal, ±2 dB at 1 kHz | 10 mV/Pa; -40 dB re. 1 V/Pa |
| Equivalent noise level, A-weighted | Typ. 18 dB(A) re. 20 µPa (max. 20 dB(A)) |
| Equivalent noise level, ITU-R BS.468-4 | Typ. 25 dB (with the attenuator at 0 dB or -20 dB) |
| Distortion, THD < 1 % | 136 dB SPL RMS, 139 dB SPL peak |
| Dynamic range | Typ. 121 dB |
| Max. SPL, THD 10 % | 159 dB SPL peak |
Electrical (each 4015A)
| Switchable attenuator | 0 dB / -20 dB |
| Rated output impedance | 200 Ω |
| Cable drive capability | 100 m (328 ft) |
| Output balance principle | Impedance balancing with Active Drive |
| Common mode rejection ratio (CMRR) | > 60 dB |
| Power supply (for full performance) | P48 phantom power |
| Current consumption | 2.8 mA |
| Maximum output voltage, RMS | > 5 V |
| Connector | XLR-3M. Pin 1: shield, pin 2: signal + phase, pin 3: - phase |
| Polarity | +V at pin 2 for positive sound pressure |
Physical (each 4015A)
| Weight | 158 g (5.6 oz) |
| Microphone diameter | 19 mm (0.75 in) |
| Capsule diameter | 19 mm (0.75 in) |
| Microphone length | 170 mm (6.7 in) |
| Temperature range | -40 °C to 45 °C (-40 °F to 113 °F) |
| Relative humidity (RH) | Up to 90 % |
| Colour | Matte black |
Stereo pair
| Matching tolerance (frequency response and sensitivity) | ±1 dB |
| Phase deviation for kit | < 10° |
Versions
| ST4015A | Matched stereo pair, 2 x 4015A Wide Cardioid Mic |
Product overview
The DPA ST4015A is a matched stereo pair of 4015A Wide Cardioid Microphones, matched to ±1 dB in frequency response and sensitivity, with a phase deviation below 10° for the kit.
Sometimes a conventional cardioid pattern is not quite open enough. Recording orchestras and other ensembles can call for a balance between blending in the room reverberation and more precise localisation, and for instruments with complex radiation patterns the wide cardioid (also known as hemispheric) design covers a greater sound angle. The off-axis characteristics are totally linear, so any leakage from off-axis sources is still a faithful reproduction of those sounds, just softly attenuated.
The 4015A suits acoustic instruments and voices with a rich and open sound and handles extremely high sound pressure levels before clipping. Each microphone includes a 20 dB pad switch in the centre of the XLR connector to prevent overloading of the microphone amplifier. It is ideal for grand piano, guitar, marimba and percussion, as a spot microphone for groups in a symphony orchestra, and as a speech, dubbing or vocal microphone whose enhanced richness in the bass complements many voices.
| Matched stereo pair | 2 x 4015A |
| Matching tolerance | ±1 dB |
| Phase deviation for kit | < 10° |
| Max. SPL peak, THD 10 % | 159 dB |
Key features
- Two 4015A microphones matched to ±1 dB, phase deviation below 10°
- Low profile, wide pickup area
- Totally linear off-axis characteristics
- Natural reproduction and directional ambience pickup
- Exceptional for vocals: enhanced richness on the bass end
- 20 dB pad switch on each microphone
Made for
- Orchestras and ensembles
- Grand piano, guitar, marimba and percussion
- Spot miking groups in a symphony orchestra
- Speech, dubbing and vocals
In the box
- 2 x DPA 4015A Wide Cardioid Microphone (matched stereo pair)
DPA ST4015A: frequently asked questions
How closely are the two microphones matched?
Frequency response and sensitivity are matched within ±1 dB, and the phase deviation for the kit is below 10°.
Why a wide cardioid pair for ensembles?
Recording orchestras and ensembles calls for a balance between room reverberation and precise localisation; the wide cardioid covers a greater sound angle than a conventional cardioid.
How does it treat off-axis sound?
Its off-axis characteristics are totally linear, so leakage is still a faithful reproduction, just softly attenuated.
Can the microphones take loud sources?
Yes. Each 4015A reaches 159 dB SPL peak at THD 10 % and has a 20 dB pad switch.
Where can I buy the DPA ST4015A in India?
The DPA ST4015A is available from Shivansh Electronics, Kolkata, West Bengal, India, with delivery across India.
Workflow 1: Stereo pair on an ensemble
Recording engineers.
Connections
| Connect | To |
|---|---|
| 4015A pair | In front of the ensemble |
| 4015A pair (XLR-3M) | Two inputs with P48, panned left and right |
Setup
- Set up the matched pair in front of the ensemble.
- Connect each microphone.
- Pan and balance.
Tip: Balances room reverberation and precise localisation.
Workflow 2: Grand piano in stereo
Studio and concert engineers.
Connections
| Connect | To |
|---|---|
| 4015A pair | Piano |
| 4015A pair | Two microphone preamps |
Setup
- Place the pair at the piano.
- Connect both.
- Pan and set matching gains.
Tip: Matching within ±1 dB keeps the image even.
Workflow 3: Orchestra groups
Recording engineers.
Connections
| Connect | To |
|---|---|
| 4015A | Group in a symphony orchestra |
| 4015A | Console input |
Setup
- Spot a group with one microphone.
- Connect.
- Blend with the main pickup.
Tip: Totally linear off-axis characteristics.
Workflow 4: Marimba and percussion
Engineers miking percussion.
Connections
| Connect | To |
|---|---|
| 4015A pair | Over the instrument |
| 4015A pair | Two inputs |
Setup
- Space the microphones over the instrument.
- Use the 20 dB pads for loud playing.
- Connect and pan.
Tip: Handles extremely high sound pressure levels before clipping.
Workflow 5: Speech and dubbing
Voice studios.
Connections
| Connect | To |
|---|---|
| 4015A | Speaker |
| 4015A | Microphone preamp with P48 |
Setup
- Place one microphone in front of the speaker.
- Connect and set the gain.
- Record.
Tip: Enhanced richness on the bass end complements many voices.
Workflow 6: Guitar
Recording engineers.
Connections
| Connect | To |
|---|---|
| 4015A | Guitar |
| 4015A | Microphone preamp |
Setup
- Place the microphone at the guitar.
- Connect.
- Record.
Tip: Rich and open sound on acoustic instruments.








