Audio Technica BP4071 Line + Gradient Condenser Microphone

Audio Technica BP4071
Audio Technica BP4071   

Audio Technica BP4071 Line + Gradient Condenser Microphone

Product Code: BP4071

Buy Sell Sales Audio Technica BP4071


  • Designed for use in broadcasting, film/TV production, and theater sound reinforcement applications
  • Direct-coupled, balanced output ensures a clean signal even in high-output conditions
  • Innovative acoustic design provides same directivity as mics up to 50% longer
  • Rugged housing made of lightweight structural-grade aluminum alloy
  • Transformerless design for improved pickup of transients
  • Switchable 80 Hz high-pass filter & 10 dB pad

With directivity equal to mics up to 50% longer, the BP4071 has been specially created to meet the pickup demands of broadcasting, film/TV sound, professional recording, wildlife recording and theater sound reinforcement. Particularly useful for miking dynamic action in film/TV audio as well as in “spot” miking techniques in the music studio or theater, the 15.55"-long BP4071 provides a low noise floor and direct-coupled, balanced output for a clean signal even in high-output conditions. Audio-Technica has pioneered an interference tube design in the BP4071 that provides the same directivity as mics up to 50 percent longer.

Element Externally polarized (DC bias) capacitor
Polar Pattern Line + Gradient
Frequency Response 20 - 20,000 Hz
Low Frequency Roll-off 80 Hz, 12 dB/octave
Open Circuit Sensitivity -29 dB (35.5 mV) re 1V at 1 Pa
Impedance 50 ohms
Maximum Input Sound Level 141 dB SPL, 1 kHz at 1% T.H.D.;
151 dB SPL, with 10 dB pad (nominal)
Dynamic Range 128 dB, 1 kHz at Max SPL
Signal-to-Noise Ratio 81 dB, 1 kHz at 1 Pa
Phantom Power Requirements 48V DC, 4.8 mA typical
Switch Flat, roll-off (recessed)
Weight 136 g
Dimensions 395.0 mm (15.55") long,
21.0 mm (0.83") maximum body diameter
Output Connector Integral 3-pin XLRM-type
Accessories AT8405a stand clamp for 5/8"-27 threaded stands; 5/8"-27 to 3/8"-16 threaded adapter; AT8145 windscreen; two O-Rings; protective carrying case