The Audio-Technica U891RCb is a cardioid condenser boundary microphone with both local and remote switching capability, designed for conference and boardroom installations requiring enhanced control. Its touch-sensitive capacitive switch supports three operating modes, while external contact closure capability allows the microphone’s switch to trigger external devices such as cameras.
Polar Pattern
Cardioid
Half-space
Switch Modes
3 Modes
On/Off, Talk, Mute
Remote Control
Yes
Contact closure + LED control
Low-Cut Filter
80 Hz
UniSteep filter
Features
✓
Touch-sensitive capacitive switch with three local operating modes
Touch-sensitive capacitive switch with three local operating modes
✓
External contact closure for triggering cameras or other devices
External contact closure for triggering cameras or other devices
✓
Two-state RGB LED status indicator with remote control
Two-state RGB LED status indicator with remote control
✓
PivotPoint rotating connector — changes cable exit point without tools
PivotPoint rotating connector — changes cable exit point without tools
✓
UniGuard RFI-shielding for unsurpassed RF immunity
UniGuard RFI-shielding for unsurpassed RF immunity
✓
80 Hz UniSteep low-cut filter reduces low-frequency ambient noise
80 Hz UniSteep low-cut filter reduces low-frequency ambient noise
✓
Accepts interchangeable elements (hypercardioid, omnidirectional available separately)
Accepts interchangeable elements (hypercardioid, omnidirectional available separately)
✓
Heavy die-cast case with silicon foam pads and screw-down mounting inserts
Heavy die-cast case with silicon foam pads and screw-down mounting inserts
✓
Phantom powered — self-contained electronics, no external power module needed
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) with remote contact closure |
| Low-Cut Filter | 80 Hz UniSteep |
| Power Requirements | 11–52V DC phantom power |
| Interchangeable Elements | Yes — hypercardioid, omnidirectional (sold separately) |
| Finish | Black |
