Sennheiser MAS 133 Inline Logic Box

The MAS 133 is an inline logic box for SpeechLine Wired systems: XLR in, XLR out, and a switch in the middle. It lets an installer put mute control on a microphone line that was never designed to carry it, without pulling new cable back to the rack.

It passes P48 phantom, presents a logic output above 2.4 V, and comes with mounting brackets and recessed screws so it can be fixed under a table or inside a lectern.