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  • AUDIO-TECHNICA AT831B Audio-Technica AT831B Miniature cardioid condenser microphone

Audio-Technica AT831B Miniature cardioid condenser microphone


Miniature cardioid condenser microphone (battery & phantom power)

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Exc VAT Price £126.30
Inc VAT Price £151.56
Cat no. AT831B

Available to order


The Audio-Technica AT831B is a miniature cardioid lavalier microphone with a sensitivity and frequency response suitable for professional video, broadcast and sound reinforcement applications. The cardioid polar pattern is effective minimizing off-axis signal, providing high gain-before-feedback while using nearby monitors and speakers.

The wide frequency response of 40Hz to 20kHz enables audio signal to be reproduced with accurate detail and minimal noise at low frequencies. The miniature capsule enables the microphone to be hidden underneath clothing and the included windscreen protects against noise caused by plosive signals and wind.

Accessories furnished:
  • AT8531 power module
  • AT8419 clothing clip
  • AT8444 instrument adapter
  • AT8116 windscreen; battery
  • protective carrying case

TransducerPermanently Polarized Condenser
Polar PatternCardioid
Frequency Response40 Hz - 20 kHz
Dynamic Range (Typical)101 dB, (@ Maximum SPL)
Signal-to-Noise Ratio65 dB, (A-Weighted)
Maximum Input Sound Level126 dB, (@ 1 kHz 1% THD)
Power RequirementsPhantom: 9 - 52v DC
Output Impedance200 Ohms
Output ConnectorsXLR-3M Type, (from AT8531 Power Module)
Low Frequency Roll-Off-6 dB / Octave @ 150 Hz
ApplicationsVocal, Instrument (Especially Guitar)
DimensionsMicrophone: .98 x .39" (25 x 10 mm) LxDiameter
Power Module: 3.27 x 2.48 x 0.87" (83 x 63 x 22mm) LxWxD
Cable: 6' (1.8 m) Long
WeightMicrophone: 0.1 oz. (2.8 g) Less Cable and Accessories
Power Module: 5.2 oz. (147 g)