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Audio Technica BP4029 Stereo Shotgun Mic

The Audio-Technica BP4029 (AT835ST) Stereo Shotgun Microphone offers two internally-matrixed modes which provide traditional "left-right" stereo.


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The Audio-Technica BP4029 (AT835ST) Stereo Shotgun Microphone offers two internally-matrixed modes which provide traditional "left-right" stereo. To accommodate varying acoustic environments, the user may select between a "wide" pattern (LR-W) with increased ambient pickup, and a "narrow" pattern (LR-N) which offers more rejection and less ambience.

In M-S mode, the BP4029 provides independent Mid and Side signals. This allows the Mid-Side balance to be adjusted as desired at the recording desk or mixing electronics, reducing the amount of equipment necessary in the field.

  • Designed for broadcasters, videographers and sound recordists
  • Compact, lightweight design is perfect for camera-mount use
  • Independent Line-cardioid and Figure-of-eight condenser elements
  • Switchable low-frequency roll-off
  • Switch selection of non-matrixed M-S mode and two internally-matrixed left/right stereo modes


Transducer Fixed-Charged Back Plate Permanently Polarized Condenser
Polar Pattern Line-Cardioid and Figure-of-Eight
Frequency Response 40Hz - 20kHz
Dynamic Range (Typical) Mid: 101dB
Side: 101dB
LR Stereo: 102dB, (All @ 1kHz at Maximum SPL)
Signal-to-Noise Ratio Mid: 72dB, (1kHz at 1Pa)
Side: 68dB, (1kHz at 1Pa)
LR Stereo: 70 B, (1kHz at 1Pa)
Maximum Input Sound Level Mid: 123dB, (1kHz at 1% T.H.D.)
Side: 127dB, (1kHz at 1% T.H.D.)
LR Stereo: 126dB, (1kHz at 1% T.H.D.)
Power Requirements Phantom Power, (9 - 52VDC)
Output Impedance 200Ω
Output Connectors XLR-5M Type (from Microphone)
2 XLR-3M Connectors (L+R) from Microphone's Adapter Cable
Pad None
Low Frequency Roll-Off Yes, (-12dB/Octave @ 80Hz)
Applications Video, Film and Broadcast Production
Dimensions 9.29 x 0.83" (236 x 21mm) LxDiameter
Weight 3.6 oz (103g)