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Audio-Technica AT831B Lavalier Condenser Microphone (AT831B)
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Audio-Technica AT831B Lavalier Condenser Microphone

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Save $85.01 (32%), MSRP $265.00
$179.99


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Consumer Alert - Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC’s wireless microphone website at http://www.fcc.gov/cgb/wirelessmicrophones.

Clip-on lavalier mic also excels in acoustic guitar applications. Provides crisp, full-sounding voice and instrument pickup. Operates on battery or phantom power. 6' (1.8 m) cable permanently attached between microphone and power module.

Audio-Technica AT831B Lavalier Condenser Microphone
Audio Technica AT831B


The Unipoint is the first and still the best miniature condenser installed-sound microphones on the market. The AT831b is a clip-on lavalier mic that excels in acoustic guitar applications. It is essentially the same mic as the AT831R the differences being that the AT831b has both battery and phantom power, and a 6' cable.

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  • Dynamic Range (Typical) : PHANTOM: 106 dB, 1 kHz at Max. SPL BATTERY: 92 dB, 1 kHz at Max. SPL
  • Element : Condenser
  • Frequency Response: 40 - 20,000 Hz
  • Impedance: PHANTOM: 200 ohms BATTERY: 270 ohms
  • Maximum Input Sound Level : PHANTOM: 135 dB SPL, 1 kHz at 1% T.H.D. BATTERY: 121 dB SPL, 1 kHz at 1% T.H.D.
  • Open Circuit Sensitivity : PHANTOM: -44 dB (6.3 mV) re 1V at 1 Pa BATTERY: -45 dB (5.6 mV) re 1V at 1 Pa
  • Phantom Power Requirements : 9 - 52V, 2 mA typical
  • Polar Pattern: Cardioid
  • Signal to Noise Ratio : 65 dB, 1 kHz at 1 Pa

One year parts and labor warranty.

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