Audio-Technica AT831 Cardioid Condenser Lavalier Microphone

The Audio-Technica AT831 Cardioid Condenser Lavalier Microphone is a versatile, clip-on solution engineered for high-fidelity audio capture. This microphone delivers crisp, full-bodied voice reproduction and performs exceptionally well as an instrument microphone, specifically for acoustic guitars. The cardioid polar pattern ensures superior background noise suppression and high gain before feedback, making it suitable for demanding acoustic environments.

Professional Audio Performance

Designed to handle higher Sound Pressure Levels (SPL), the Audio-Technica AT831 maintains clarity in loud applications. The condenser element provides the sensitivity required for professional recording and broadcast tasks. Each unit includes a windscreen to reduce breath and wind noise, along with a clothing clip for secure and discreet placement.

Versatile Applications

While primarily used for vocal pickup, the AT831 excels in instrument miking. It captures the natural resonance of acoustic guitars with precision. The wired AT831R configuration specifically includes the AT8444 guitar mount to facilitate optimal placement on the instrument.

Available Configurations

The Audio-Technica AT831 is available in several specialized configurations to meet various connectivity and power requirements:

Wired and Powered Models

AT831R: Features a 13.1-foot (4.0 m) permanently attached cable terminated with a TA3F connector. It includes the AT8538 phantom-only power module with an 80 Hz high-pass filter and the AT8444 guitar mount.
AT831b: Includes a 6-foot (1.8 m) permanently attached cable terminated with a TA3F connector. This version uses the AT8531 power module, which supports both battery and phantom power and includes an 80 Hz high-pass filter.

Wireless and Unterminated Models

AT831c: Provides a 10-foot (3 m) permanently attached cable that is unterminated and does not include a power module.
AT831cH: Features a 55-inch (1.4 m) cable terminated with a screw-down 4-pin connector for use with Audio-Technica cH-style body-pack wireless transmitters.
AT831cW: Includes a 55-inch (1.4 m) cable terminated with a locking 4-pin cW-style connector for Audio-Technica cW-style wireless systems.
AT831cT4: Equipped with a 55-inch (1.4 m) cable and a TA4F connector for compatibility with Shure wireless systems.

Element	Condenser
Polar Pattern	Cardioid
Frequency Response	40 - 16,000 Hz
Low Frequency Roll Off	80 Hz, 18 dB/octave (wired only)
Open Circuit Sensitivity	-42 dB (7.9 mV) re 1V at 1 Pa
Maximum Input Sound Level	141 dB SPL, 1 kHz at 1% T.H.D.
Dynamic Range	112 dB, 1 kHz at Max SPL (wired only)
Signal-to-Noise Ratio	65 dB, 1 kHz at 1 Pa
Phantom Power Requirements	11-52V DC, 2 mA typical (wired only)
Switches	Off, on-flat, on-roll-off (wired only)
Weight	Microphone: 2.8 g (0.1 oz), Power Module: 81 g (2.9 oz) (wired only)
Dimensions	Microphone: 25.0 mm (0.98") long, 10.2 mm (0.40") diameter, Power Module: 3.66" (92.9 mm) long (wired only), 0.74" (18.9 mm) diameter
Output Connector	Integral 3-pin XLRM-type on Power Module (wired only)
Accessories Included	AT8419 clothing clip; AT8444 Instrument Microphone Adapter (wired only); AT8538 remote power module (wired only); AT8116 windscreen; protective carrying case (wired only)