Audio-Technica AT831 Cardioid Condenser Lavalier Microphone

Achieve crisp and full-sounding voice pickup with one of the configurations of the lavalier microphone AT831 from Audio-Technica. Excellent gain before feedback and the mic’s ability to isolate background noise make it ideal in higher SPL applications. Cardioid pattern of the condenser mic delivers quality sound reinforcement in professional recording, TV, and other demanding sound pickup locations.

Cardioid polar pattern of this lav mic has a 120° angle of acceptance. This pattern and acceptance angle allow the mic to focus in on the desired sound source while minimizing background noises to the sides and rear of the mic. Lavalier adapts to the environment with a frequency response of 40-16,000 Hz and the ability to handle sound pressure levels up to 135 dB.

Lavalier has rugged construction to withstand damages in travel or when worn. Small enough to not get in the way or be noticeable, this mic delivers the sound quality you want without feeling like a mic is in place at all. Windscreen and clothing clip are included for further sound optimization and mounting convenience. Design and microphone features make lapel mic AT831 a great choice for many public speaking uses, as well as acoustic guitar pickup when paired with AT844 guitar mount*.

All AT831 models have the features detailed above, with termination styles, cable length and power module changing depending on the model. Models with a power module can switch between flat response or low-frequency roll-off positions for further sound control. 11V to 52V of phantom power is required to operate all models except AT831b (AT831b can use phantom power or battery).

*For use with guitar mount AT844, AT831R is the compatible model.

Audio-Technica AT831 Features

• Cardioid polar pattern
• Crisp, full-sounding voice and instrument pickup
• Excellent gain before feedback and suppression of background noise
• Also excels in acoustic guitar applications with guitar adapter(adapter is included with model AT831R)

• AT831 Cardioid Condenser Lavalier Microphone1
• AT8116 Windscreen1
• AT8417 Clothing Clip1
• AT8444 Instrument Adapter (wired only)1
• AT8538 Power Module (wired only)1
• Protective Carrying Case (wired only)1
• AT831b, AT831c, AT831R Limited End User Warranty: 5 Years1
• AT831cH, AT831cT4, AT831cW Limited End User Warranty: 2 Years1

• Transducer TypeCondenser
• Polar PatternCardioid
• Frequency Response40 Hz - 16 kHz
• Output Impedance
  • Phantom: 200Ω
  • Battery: 270Ω
• Low Frequency Roll Off80 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 Range112 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: 0.1 oz (2.8 g)
  • Power Module : 81 g (2.9 oz) (wired only)
• Dimensions
  • Microphone: 0.98 inches (25 mm) long, 0.4 inches (10.2 mm) diameter
  • Power Module: 3.66 inches (92.9 mm) long (wired only), 0.74 inches (18.9 mm) diameter
• Output Connector Integral 3-pin XLRM-type on Power Module (wired only)
• Microphone Configurations
  • AT831c
    • 10' cable
    • Unterminated
    • No power module
  • AT831cW
    • 4.6' cable
    • cW-style locking 4-pin connector
    • No power module
  • AT831cH
    • 4.6' cable
    • Screw-down 4-pin connector
    • No power module
  • AT831cT4
    • 4.6' cable
    • TA4F connector
    • No power module
  • AT831b
    • 6' cable
    • TA3F connector
    • Power module AT8531 for 1.5V AA battery or phantom power
  • AT831R
    • 13.1' cable
    • TA3F connector
    • Power module AT8538 for phantom power