The Whirlwind Micmute PPD 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 PPD is configured as a latching Push On/Push Off switch (the switch must be pushed and released to turn the signal on or off through the box). Each time the switch is toggled, the signal is changed from one condition to the other. The signal is disconnected as soon as the switch is released.Micmute PPD offers an indicator LED that is operational when the connected mic preamp input is providing phantom power. The blue LED illuminates to indicate that the mic is live and signal is passing through the Micmute box. The LED is not functional when phantom power is not present. It also boasts an indicating rocker switch that displays a red bar when the signal is turned on.Micmute PPD 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.