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BP894-TH 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
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  • Overview


    Audio-Technica’s innovative BP894-TH MicroSet® offers the ultimate in low-profile, high-performance audio. The BP894-TH features a rotating capsule housing with talk-side indicator for use on either ear and perfect polar pattern placement. The MicroSet BP894-TH 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-TH 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


    • 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

    • High-pass filter on power module provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality

    • 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)
      BP894cH – less power module; 55" (1.4 m) cable terminated with a screw-down 4-pin connector for use with Audio-Technica wireless systems featuring cH-style connector
      BP894cH-TH – same as BP894cH, but in "theater" color (beige)
      BP894cW – less power module; 55" (1.4 m) cable terminated with a locking 4-pin connector for use with Audio-Technica wireless systems featuring cW-style connector
      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
    POLAR PATTERNCardioid
    FREQUENCY RESPONSE20-20,000 Hz
    LOW FREQUENCY ROLL-OFF80 Hz, 18 dB/octave (wired only)
    OPEN CIRCUIT SENSITIVITY–49 dB (3.5 mV) re 1V at 1 Pa
    IMPEDANCE250 ohms (wired only)
    MAXIMUM INPUT SOUND LEVEL135 dB SPL, 1 kHz at 3% T.H.D.
    DYNAMIC RANGE (typical)104 dB, 1 kHz at Max SPL (wired only)
    SIGNAL-TO-NOISE RATIO63 dB, 1 kHz at 1 Pa
    PHANTOM POWER REQUIREMENTS11-52V DC, 2 mA typical (wired only)
    SWITCHFlat, roll-off (wired only)
    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)
    WEIGHT (POWER MODULE)85 g (3.0 oz)
    (wired only)
    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
    DIMENSIONS (POWER MODULE)97.6 mm (3.84") long, 18.9 mm (0.74") diameter
    (wired only)
    OUTPUT CONNECTOR (POWER MODULE)Integral 3-pin XLRM-type
    CABLE1.4 m (55") long (permanently attached to microphone), 1.6 mm (0.06") diameter, 2-conductor shielded cable with locking 4-pin connector (wired only)
    ACCESSORIES FURNISHEDBP894: AT8539 power module (wired only); AT8464 dual-ear microphone mount; AT8440 cable clip; two AT8163 windscreens; moisture guard; belt clip (wired only); carrying case
    BP894-TH: AT8539 power module (wired only); AT8464-TH dual-ear microphone mount; AT8440 cable clip; two AT8163-TH windscreens; moisture guard; belt clip (wired only); carrying case
    Click on the chart to view the larger image
    POLAR PATTERN
    POLAR PATTERN
    FREQUENCY RESPONSE
    FREQUENCY RESPONSE



    Conditions
  • Downloads

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

  • Q & A