Audio-Technica AT831R Cardioid Condenser Lavalier Microphone

Priced: $179.95
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Audio-Technica AT831R Cardioid Condenser Lavalier Microphone -

The Audio-Technica AT831R Cardioid Condenser Lavalier Microphone is a miniature clip-on/lavalier condenser microphone with a cardioid polar pattern. It is designed for quality sound reinforcement, professional recording, television and other demanding sound pickup applications. The microphone is intended to be worn on the clothing or used as an instrument mic for excellent yet unobtrusive sound pickup.
The wide range capability of the microphone ensures clean, accurate reproduction with high intelligibility for speakers and presenters as well as for instrument pickup. Its small size makes it ideal for use in applications where minimum visibility is required. The microphone requires 11V to 52V phantom power for operation. The microphone's cardioid polar pattern provides a 120deg. angle of acceptance. The microphone includes a 4m (13.1') permanently attached miniature cable.
Its free end connects to the provided AT8538 power module via a TA3F-type connector. The output of the power module is a 3-pin XLRM type connector. A recessed switch in the power module permits choice of flat response or low-frequency roll-off (via integral 80 Hz high-pass UniSteep filter) to help control undesired ambient noise.


  • Provides crisp, full-sounding voice and instrument pickup
  • Clip-on lavalier mic also excels in acoustic guitar applications
  • Operates on phantom power only
  • 13.1' (4m) cable permanently attached to mic, TA3F connector at power module
  • Excellent gain before feedback and suppression of background noise
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Audio-Technica case style:M1
Cable Length:4.0m / 13.1' (permanently attached to microphone), 3.2mm / 0.13" (Diameter), 2-conductor, shielded cable with TA3Ftype connector
Dimensions:Microphone: 25.0x10.2mm / 0.98x0.40" (LxDiameter) Power Module: 92.9x18.9mm / 3.65x0.74" (LxDiameter)
Dynamic range (typical):112 dB, 1 kHz at Max SPL
Element:Fixed-charge back plate, permanently polarized condenser
Frequency response:40-16000 Hz
Impedance:250 ohms
Low frequency roll-off:80 Hz, 18 dB/octave
Maximum input sound level:141 dB SPL, 1 kHz at 1% T.H.D.
Open circuit sensitivity:-42 dB (7.9 mV) re 1V at 1 Pa
Output connector:Power module: Integral 3-pin XLRM-type
Phantom power requirements:11-52V DC, 2 mA typical
Polar pattern:Cardioid
Signal-to-noise ratio:65 dB, 1 kHz at 1 Pa
Switch:Flat, roll-off
Weight:Microphone: 2.8g / 0.09oz Power module: 81g / 2.85oz

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