The Whirlwind Micmute PMD offers a desktop passive switching solution for controlling the on and off conditions of a microphone or balanced line signal via its finger switch. Micmute PM is configured as a Push to Mute switch, with its input signal is normally on, passing through the box. When its switch is depressed and held down, the signal is turned off or muted. The signal is reconnected as soon as the switch is released.Micmute PMD sports a female XLR input and a male XLR output jack. When no signal is passing through the box, the output jack is configured to mute the input of the connected audio device.