The Whirlwind Micmute PTD 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 PTD is configured as a Push to Talk switch, with its input signal normally not connected to the output (nothing passing through the box). When its switch is depressed and held down, the signal is turned on and passed through to the output. The signal is disconnected as soon as the switch is released.Micmute PTD 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.