The UA Bock 167 is a large-diaphragm tube condenser microphone featuring a continuously variable polar pattern, high frequency boost-flat-cut controls, “fat” switch for extended bass response, and -10 dB pad.

The UA Bock 251 is a professional large-diaphragm tube condenser microphone featuring selectable polar patterns, an oversized transformer for extended low-frequency response, and premium hand-sourced components.