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Audio-Technica BP894CT4
Subminiature Cardioid Condenser Headworn Microphone with Shure AT4F Connector in Black


The BP894 MicroSet® earset microphone offers the ultimate in low-profile, high-performance audio.
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Our Price: $379.00
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Audio-Technica BP894CT4
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The BP894 MicroSet® earset microphone offers the ultimate in low-profile, high-performance audio. The BP894 features a rotating capsule housing with talk-side indicator for use on either ear and perfect polar pattern placement. The MicroSet BP894 takes headworn microphones to the next level, by allowing the cardioid capsule to be aimed directly at the sound source. The uniform pickup pattern provides excellent rejection of outside noise, with exceptional gain-before-feedback when used with live sound systems and stage monitors.

Delivering clear and accurate sound in an inconspicuous package, the ultra-lightweight BP894 hooks securely behind either ear and can be worn for hours witout fatigue. For maximum stability and comfort, the included AT8464 dual-ear microphone mount converts the MicroSet to a dual-ear-worn unit.


  • Features a rotating capsule housing with talk-sideindicator for use on either ear and perfect polar pattern placement
  • Provides superior intelligibility and clean, accuratereproduction for the most demanding house of worship user, lecturer,broadcaster or theater performer
  • Handles high sound pressure levels with ease
  • Extremely intelligible natural audio
  • Inconspicuous, lightweight headset with capsulediameter of just 2.8 mm is ideal for applications requiring minimum visibility
  • Ergonomic under-ear design—flexible, lightweightcontoured loop hooks behind the ear for an ultra-secure, comfortable fit withor without glasses
  • Comes equipped with AT8464 Dual-Ear Microphone Mountthat converts single ear-worn MicroSet to a dual-ear-worn unit for maximumstability and comfort
  • High-pass filter on power module provides a steep low-frequencyattenuation to improve sound pickup without affecting voice quality


  • Element: Fixed-charge back plate, permanentlypolarized condenser
  • Polat Pattern: Cardioid
  • Frequency Response: 20-20,000 Hz
  • Low-Frequency Roll-off: 80 Hz, 18 dB/octave (wiredonly)
  • Open Circuit Sensitivity: –49 dB (3.5 mV) re 1V at 1Pa
  • Impedance: 250 ohms (wired only)
  • Maximum Input Sound Level: 135 dB SPL, 1 kHz at 3%T.H.D.
  • Dynamic Range(typical): 104 dB, 1 kHz at Max SPL(wired only)
  • SIGNAL-TO-NOISE Ration: 63 dB, 1 kHz at 1 Pa
  • Phantom Power requirements: 11-52V DC, 2 mA typical(wired only)
  • Switch: Flat, roll-off (wired only)
  • Current Consumption: 0.1 mA typical at 5V (wirelessonly)
  • Voltage Range: 2.5-11V (wireless only)
  • Weight (Microphone): Microphone, boom & earpiece:0.07 oz
  • Weight (Power Module): 3.0 oz (wired only)
  • Dimensions
    • Microphone: 0.26"(L) x 0.11" diameter
    • Boom: 4.23"(L) x 0.04" diameter
  • Dimensions (Power Module): 3.84"(L), x (0.74")diameter (wired only)
  • Output connector (Power Module): Integral 3-pinXLRM-type
  • Cable: 1.4 m (55") long (permanently attached tomicrophone), 1.6 mm (0.06") diameter, 2-conductor shielded cable with Shure TA4F connector
  • Accessories furnished: AT8464 dual-ear microphone mount, AT8440 cable clip, two AT8163 windscreens, moisture guard, carrying case

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