This is the higher performance version of the PRO 70. It has a
wider frequency response then the PRO 70 which captures the high end
frequencies more accurately. This very mic was used by Stochelo
Rosenberg and Romane on the href="
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Audio Technica AT831B Lavalier Microphone

For
years this condenser microphone has been one of the top choices in
the
industry for lavalier microphones and can be found installed
in many of
the top wireless lavalier systems as well.  It also can serve as
an
acoustic guitar mic mounted in the sound hole. The cardioid pickup
pattern ensures the best possible pickup directly in front of the
microphone while minimizing external noise, thus resulting in minimal
feedback.  The microphone comes with a tie/collar clip and
terminates
to a power module with battery.  In place of the battery, the
microphone can also be powered by 48 volt phantom power.

• 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

• Element: Condenser


• Polar Pattern: Cardioid


• Frequency Response: 40 - 20,000 Hz


• 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


• 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.


• Signal to Noise Rati 65 dB, 1 kHz at 1 Pa


• Dynamic Range (Typical): PHANTOM: 106 dB, 1 kHz at Max. SPL;
  BATTERY: 92 dB, 1 kHz at Max. SPL


• Phantom Power Requirements: 9 - 52V, 2 mA typical


• Battery Type: 1.5V AA/UM3


• Battery Current/Life: 0.4 mA/1200 hours typical


• Switch: Off/on-flat/on-roll-off


• Low Frequency Roll-off: 80 Hz, 18 dB per octave


• Weight: 0.1 oz (2.8 g)


• Power Module: Inline


• Output Connector: XLRM-type (power module)


• Accessories:
  AT8116 foam windscreen; AT8417 clothing clip; AT8444 instrument
  adapter; AT8530 power module (attached); battery; protective case