AT831B Clip On Lavaliere Instrument Mic Condenser Cardioid

Audio-Technica's AT831b is a miniature cardioid condenser microphone engineered for close-miking instruments in both live sound and installed audio environments. Its compact, low-profile design allows discreet placement on a wide range of acoustic and amplified instruments, making it an indispensable tool for theatre pits, houses of worship, and touring rigs alike.

The permanently polarised condenser element delivers a smooth, detailed frequency response from 40 Hz to 20 kHz, capturing the full tonal character of brass, woodwinds, strings, piano, and percussion with exceptional clarity. A cardioid polar pattern provides focused on-axis pickup while minimising bleed from adjacent sources — critical in dense stage environments where isolation matters.

- Element: Permanently polarised condenser (back-electret)
- Polar Pattern: Cardioid
- Frequency Response: 40 Hz – 20 kHz
- Powering: 11–52V phantom power
- Switchable 80 Hz hi-pass filter for controlling proximity effect and low-frequency rumble
- Includes AT8418 UniMount® clip for secure, vibration-isolated instrument attachment
- Durable, low-profile housing suitable for permanent installation or nightly deployment

Supplied with a clothing clip, windscreen, and battery adapter, the AT831b offers versatile mounting options for both instrument and lavalier applications. Its robust build quality and reliable phantom-powered operation make it a trusted choice for professional integrators and sound engineers who demand consistent performance in demanding environments.