AT831b AT MIC, Mini Clip-On Unipoint

The AT831b is a miniature clip-on/lavalier condenser microphone with
a cardioid polar pattern. It is designed for quality sound reinforcement,
professional recording, television and other demanding sound pickup
applications.
The microphone is intended to be worn on the clothing or used as an
instrument mic for excellent yet unobtrusive sound pickup. The widerange
capability of the microphone ensures clean, accurate reproduction
with high intelligibility for speakers and presenters as well as for
instrument pickup. Its small size makes it ideal for use in applications
where minimum visibility is required.
The microphone requires 11V to 52V phantom power or a 1.5V AA battery
for operation. A battery need not be in place for phantom power operation.
The microphone’s cardioid polar pattern provides a 120° angle of
acceptance.
The microphone includes a 1.8 m (6′) permanently attached miniature
cable. Its free end connects to the provided AT8531 power module via a
TA3F-type connector. The output of the power module is a 3-pin XLRMtype
connector.
A 3-position switch in the power module permits choice of off, on/flat
response or on/low-roll-off (via integral 80 Hz high-pass UniSteep® filter).
The roll-off position reduces the pickup of low-frequency ambient noise.
The microphone comes equipped with a power module, a clothing clip, an
instrument adapter, a windscreen, a battery and a protective carrying case.