As title reads. I'd like to be able to mute for silent tuning on stage but was wondering the best way to do this. Thanks. I have a switch box with two outputs (one is marked A or A/B and the other is B). I'm currently using this to switch channels on an effect in my rack, but was wondering if I connected the currently unused B output on my footswitch to the RBI footswitch in and ran a line from the "unaffected" RBI output to the tuner, if the B switch would toggle the RBI into active/muted mode for silent tuning, giving me exactly what I was looking for without having to buy a second footswitch pedal and muck up the floor.