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Audio-Technica U891RCb

Boundary microphones | Product code: U891RCB | ID: 315364

Audio-Technica U891RCb

Audio-Technica U891RCb

A wide-range condenser microphone with a cardioid polar pattern, the U891RCb is equipped with local and remote switching options. Locally, the microphone’s touch-sensitive capacitive-type user switch can be set to three operating modes: touch-on/touch-off, press to talk, and press to mute. For enhanced control in conference and boardroom installations, the unit’s external contact closure capability allows a user to trigger an external device – a camera, for instance – from the microphone’s user switch. The phantom-powered mic is also equipped with an 80 Hz low-cut UniSteep filter to reduce pickup of low-frequency ambient noise. Its two-state RGB LED status indicator can be controlled remotely. UniGuard innovations offer unsurpassed immunity from radio frequency interference. Unique PivotPoint rotating connector changes the cable exit point – no tools required. The microphone’s heavy die-cast case and silicon foam bottom pads minimize coupling of surface vibration to the microphone, while threaded inserts on the bottom of the microphone allow it to be mounted with screws for increased security. The unit’s self-contained electronics eliminate the need for an external power module.

  • Accessories: soft protective pouch
  • Low frequeny roll-off: 80 Hz, 18 dB/octave
  • Open circuit sensitivity: -34 dB (19.9 mV) re 1V at 1 Pa
  • Impedance: 50 Ohm
  • Maximum input sound level: 130 dB SPL, 1 kHz at 1% T.H.D.
  • Dynamic range: 104 dB, 1 kHz at Max SPL
  • S/N ratio: 68 dB, 1 kHz at 1 Pa, A-weighted
  • Phantom power: 11-52V DC, 9.3 mA


  • Activation: on/off
  • Switch function: touch on/off, momentary on, momentary off
  • Control: local, remote, LED remote
  • LED Color: mic on, mic off
  • Flat, roll-off

Output connector

  • Microphone: TA5F-type
  • Cable: unterminated
  • 7,6 m cable TA5F-type connector at microphone end, output end stripped and tinned for connection to electronic device
  • Polar pattern: Cardioid
  • Frequency response: 20 - 20,000 Hz
  • Dimensions: 23 x 83,9 x 108 mm
  • Weight: 253 g
  • Colour: Black

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