The MS112 is an XLR switching device. The MS112 will allow you to Push To Talk or mute an XLR signal with a selectable momentary or latching switch configuration. LED indicator for monitoring where the XLR signal is being sent. A mic or line level XLR is plugged into the input, and output is sent to the A or B outputs in a momentary or latching configuration. Quiet switching for both +48V phantom power microphones or dynamic microphones.