Mute for 1 microphoneInputs and outputs (XLR, balanced)Large button for hand or foot operationRobust metal housingCan be mounted anywhere (screw-on)Passive (no operating voltage required) The MS111 is a general purpose mute switch for microphones. It lets phantom power through without cracking the outputs. It can be configured as push to mute or Release to mute via a second switch on the side of the unit. The MS111 is compatible with balanced signals only.