The Audio-Technica U851Rb is a cardioid condenser boundary microphone in black, delivering outstanding speech intelligibility and transparent sound quality for surface-mount applications. Equipped with a PivotPoint rotating output connector, UniSteep filter and UniGuard RFI-shielding technology, it accepts interchangeable condenser elements and is built around a heavy die-cast case with silicon foam bottom pads.
Cardioid
Polar Pattern · Half-space
UniSteep
Low-Cut Filter ·
Black
Finish ·
Features
Outstanding speech intelligibility and transparent sound quality
PivotPoint rotating output connector, changes cable exit point without tools
UniSteep low-cut filter reduces low-frequency ambient noise
UniGuard RFI-shielding for unsurpassed RF immunity
Accepts optional interchangeable elements (UE-O omnidirectional, UE-H hypercardioid)
Heavy die-cast case with silicon foam pads minimises surface vibration coupling
Phantom powered, self-contained electronics, no external power module needed
Specifications
| Element | Condenser |
| Polar Pattern | Cardioid (half-space) |
| Low-Cut Filter | UniSteep |
| Power Requirements | 11-52V DC phantom power |
| Interchangeable Elements | Optional UE-O omni, UE-H hypercardioid |
| Finish | Black |





