The Audio-Technica U891Rb is a cardioid condenser boundary microphone with a built-in touch-sensitive capacitive switch, designed for conferencing and boardroom installations. It features three switchable operating modes (touch on/off, touch to talk, touch to mute), a two-state RGB LED status indicator and a PivotPoint rotating output connector for flexible cable routing.
Cardioid
Polar Pattern · Half-space
3 Modes
Switch Modes · On/Off, Talk, Mute
80 Hz
Low-Cut Filter · UniSteep filter
Black
Finish ·
Features
Touch-sensitive capacitive switch with three operating modes
Two-state RGB LED status indicator
PivotPoint rotating output connector, no tools required
UniGuard RFI-shielding for unsurpassed RF immunity
80 Hz UniSteep low-cut filter reduces low-frequency ambient noise
Accepts interchangeable elements (hypercardioid, omnidirectional available separately)
Heavy die-cast case with silicon foam pads minimises surface vibration coupling
Threaded inserts on base for screw-down mounting
Phantom powered, self-contained electronics, no external power module needed
Specifications
| Element | Condenser |
| Polar Pattern | Cardioid (half-space) |
| Switch Type | Touch-sensitive capacitive (3 modes) |
| Low-Cut Filter | 80 Hz UniSteep |
| Power Requirements | 11-52V DC phantom power |
| Interchangeable Elements | Yes, hypercardioid, omnidirectional (sold separately) |
| Finish | Black |





