The MM11 Pro MicMute is a simple device designed to temporarily mute or talk a balanced XLR signal. Very similar to the MM11, but the "PRO" version has push to talk or push to mute switch that allows to unit to do just that. The MM11 Pro will pass phantom power, with no popping on the outputs when switched. Simply press the switch for muting (or talking) and release to hear the signal again (or to mute). The MM11 has a large actuator switch which may be used by hand, or on the floor with your foot.