The AT831R is a miniature cardioid condenser microphone engineered for discreet instrument and vocal pickup in live sound and broadcast applications, featuring a flat response suitable for both speech and musical instruments. The S2 connector variant ships with a 4-pin mini connector compatible with specific wireless systems and powered cable configurations, while the microphone element delivers Audio-Technica's characteristic low-noise miniature condenser performance.

Flat Response for Instrument and Vocal Use

The AT831R's extended, relatively flat frequency response from 30 Hz to 20 kHz makes it equally useful for lavalier voice pickup and close-miking musical instruments. The cardioid polar pattern provides moderate rejection of sound from behind the capsule, helping isolate the intended source from monitor speakers and stage ambient noise.

S2 Connector Variant

The S2 connector designation indicates a specific 4-pin mini XLR connector configuration for direct compatibility with wireless systems that specify this connector type. The microphone element and its acoustic characteristics are identical to the standard AT831R; only the termination connector differs.

Low-Profile Housing

The slim cylindrical housing and flexible cable allow the AT831R to be positioned close to instrument surfaces, mounted at the edge of a drum shell, or worn as a lapel microphone with minimal visual impact. The included mount accessories support multiple placement configurations.