
The Audio-Technica U891RB Condenser Boundary Microphone with Switch is a versatile condenser boundary microphone designed for surface-mount applications. This microphone provides high-quality sound reinforcement for professional recording, television, and conferencing environments. The self-contained electronics eliminate the need for external power modules, streamlining installation in demanding sound pickup situations.
A touch-sensitive capacitive-type user switch offers easy control with three distinct operating modes. Users can configure the switch for touch on/off, touch to talk, or touch to mute functionality. An integral, phantom-powered RGB LED status indicator provides a clear two-state visual representation of the microphone's on/off status.
The small-diameter UniPoint element sits near the boundary to eliminate phase distortion and deliver clear, high-output performance. Superior off-axis rejection ensures maximum gain before feedback. The microphone includes an 80 Hz low-cut UniSteep filter that effectively reduces the pickup of low-frequency ambient noise. While the unit comes with a standard element, interchangeable elements are available separately to provide omnidirectional (360°), cardioid (120°), and hypercardioid (100°) polar patterns.
UniGuard RFI-shielding technology provides unsurpassed immunity from radio frequency interference. This innovation ensures clean signal transmission even in environments with high RFI levels.
The heavy die-cast case paired with non-slip silicone foam bottom pads minimizes the coupling of surface vibrations to the microphone. A low-profile design with a low-reflectance finish ensures minimum visibility during use. The unique PivotPoint rotating output connector allows the cable to exit from either the rear or the bottom of the housing. For permanent installations, threaded inserts on the bottom of the microphone enable secure mounting with screws.