Reverses the phase (polarity) of a balanced audio signal. In line switch permits selection of normal or reversed polarity for comparison purposes.

Helps to eliminate electrical and mechanical noise in an audio system such as 60Hz electrical hum from AC power lines, low-frequency rumble caused by wind noise or air conditioning system, and stage/floor noise transmitted to a microphone through the microphone stand

Iconic unidyne vocal microphone.

No connectors. Requires soldering.