In the blurb that is on the the zoom web page it says that you can mute when tuning. However, I bought one and can't see any mute on the thing. Is it possible to mute when tuning? This is what they say: In addition, the B3s LCD displays and LED indicators make the Tuner easy to see on a dark stage, where you can also mute the output to tune silently. If not what is the best way to mute the guitar when tuning on stage. I have not played guitar for a long time and just getting back into it, so sorry if the questions is a bit daft.