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BP894c MicroSet®

Subminiature Cardioid Condenser Headworn Microphone

U.S. Two-Year Limited End-User Warranty

*Manufacturer's Suggested Retail Price. Actual selling price may vary; please check with an authorized Audio-Technica dealer.

  • Overview
  • Features
  • Specifications
  • Downloads
  • Reviews
  • Q & A

  • Overview

    BP894 Subminiature Cardioid Condenser Headworn Microphone, less power module. 1.4 m (55") permanently attached miniature cable, unterminated. Includes AT8440 cable clip, AT8464 dual-ear microphone mount, two AT8163 windscreens, a moisture guard, and a carrying case. See BP894 for more details.
  • Features

    • Features a rotating capsule housing with talk-side indicator for use on either ear and perfect polar pattern placement

    • Provides superior intelligibility and clean, accurate reproduction 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 capsule diameter of just 2.8 mm is ideal for applications requiring minimum visibility

    • Ergonomic under-ear design—flexible, lightweight contoured loop hooks behind the ear for an ultra-secure, comfortable fit with or without glasses

    • Comes equipped with AT8464 Dual-Ear Microphone Mount that converts single ear-worn MicroSet to a dual-ear-worn unit for maximum stability and comfort

    • Available in black and beige, wired and wireless models:
      BP894 – includes AT8539 power module
      BP894-TH – same as BP894, but in "theater" color (beige)
      BP894c – less power module; 55" (1.4 m) cable, unterminated
      BP894c-TH – same as BP894c, but in "theater" color (beige)
      BP894cW – less power module; 55" (1.4 m) cable terminated with locking 4-pin connector for A-T UniPak® wireless systems
      BP894cW-TH – same as BP894cW, but in "theater" color (beige)
      BP894cL4 – less power module; 55" (1.4 m) cable terminated for Sennheiser wireless systems using Lemo connector
      BP894cL4-TH – same as BP894cL4, but in "theater" color (beige)
      BP894cLM3 – less power module; 55" (1.4 m) cable terminated for Sennheiser wireless systems using locking 3.5 mm connector
      BP894cLM3-TH – same as BP894cLM3, but in "theater" color (beige)
      BP894cT4 – less power module; 55" (1.4 m) cable terminated with TA4F-type connector for Shure wireless systems
      BP894cT4-TH – same as BP894cT4, but in "theater" color (beige)

  • Specifications

    ELEMENTFixed-charge back plate, permanently polarized condenser
    OPEN CIRCUIT SENSITIVITY–49 dB (3.5 mV) re 1V at 1 Pa
    SIGNAL-TO-NOISE RATIO63 dB, 1 kHz at 1 Pa
    CURRENT CONSUMPTION0.1 mA typical at 5V (wireless only)
    VOLTAGE RANGE2.5-11V (wireless only)
    WEIGHT (MICROPHONE)Microphone, boom & earpiece: 2.0 g (0.07 oz)
    DIMENSIONSMicrophone: 6.5 mm (0.26") long, 2.8 mm (0.11") diameter
    Boom: 107.4 mm (4.23") long, 1.09 mm (0.04") diameter
    CABLE1.4 m (55"), unterminated
    ACCESSORIES FURNISHEDBP894c: AT8464 dual-ear microphone mount; AT8440 cable clip; two AT8163 windscreens; moisture guard; carrying case
    BP894c-TH: AT8464-TH dual-ear microphone mount; AT8440 cable clip; two AT8163-TH windscreens; moisture guard; carrying case
    Click on the chart to view the larger image

  • Downloads

    BP894 Submittal Sheet (pdf 371.41 KB)
    BP894 Specification Sheet (pdf 941.35 KB)
  • Reviews

  • Q & A

    Can the microphone be used with a ATW-T1001 transmitter?


    No, but you may use the BP894cW microphone. You may use any Audio-Technica wireless microphone that ends in the code "cW" which indicates the cable properly terminates with the 4 pin HRS connection used on your Audio-Technica UniPak transmitter.


    Where can I find replacement wind screens for these 894 cW units.


    The replacement AT8163 may be purchased through an Authorized Audio-Technica Dealer.


    How does the "rotating capsule housing" actually rotate? I don't want to break anything and I can't tell if I'm just supposed to rotate it or remove it first. The microphone is new so I don't know if it supposed to be stiff or there is another way to rotate it.


    Thank you for your inquiry. There is a white dot on the element side of the rotating capsule housing and depending if the earpiece is on the right or left side, the element should be facing the source. The rotation is 180 degrees. You may also contact our Audio Solutions Department at (330) 686-2600 ext 5000 or at for additional assistance with this.


    What is the part # for the BP894c with Sennhizer mini jack connector in beige


    The BP894c will NOT work with Sennheiser wireless systems. The two main reasons are that the "c" version is un-terminated (has no connector; bare-wire), and because A-T microphones made for Sennheiser function as 2-wire microphones, whereas all other versions are 3-wire. HOWEVER, the two BP894 products that will work with Sennheiser Wireless Systems are the following: BP894cLM3 for Sennheiser 3.5mm connection BP894cL4 for Sennheiser Lemo connection Either are available in Beige if you add a -TH to the title (example: BP894cLM3-TH). Thanks!