The BP4027 (AT815ST) Stereo Shotgun Microphone from Audio-Technica is a direct result of input Audio Technica received from broadcasters over the last few years. After extensive testing of this microphone by television broadcast professionals, as well as at Olympic test events, this microphone became a favorite among broadcasters, sound recordists and videographers.

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

Audio-Technica BP4027 Specs:
Transducer Fixed-Charged Back Plate Permanently Polarized Condenser
Polar Pattern Line-Cardioid and Figure-of-Eight
Frequency Response 30 Hz - 20 kHz
Dynamic Range (Typical) Mid: 123 dB
Side: 127 dB
LR Stereo: 126 dB, (All @ 1 kHz at Maximum SPL)
Signal-to-Noise Ratio Mid: 72 dB, (SPL, 1 kHz at 1 Pa)
Side: 68 dB, (SPL, 1 kHz at 1 Pa)
LR Stereo: 70 dB, (SPL, 1 kHz at 1 Pa)
Maximum Input Sound Level Mid: 123 dB, (1 kHz at 1% T.H.D.)
Side: 127 dB, (1 kHz at 1% T.H.D._
LR Stereo: 126 dB, (1 kHz at 1% T.H.D.)
Power Requirements Phantom Power, 9 - 52 VDC
Output Impedance 200 ohms
Output Connectors XLR-5M Type (from Microphone)
2 XLR-3M Connectors (L+R) from Microphone's Adapter Cable
Pad None
Low Frequency Roll-Off -12 dB/Octave, (@ 80 Hz)
Applications Video Film, and Broadcast Production
Dimensions 14.96 x 0.83" (380 x 21 mm) L x Diameter
Weight 5.0 oz (142 g)

Audio Technica BP4027 (Audio-Technica BP-4027)