A: If you mute a channel on the 1402-VLZ PRO® where does it go? Nowhere? The Bermuda Triangle? S.E.T.I. broadcasts? No, actually it goes to the Alt 3/4 Bus. This has many applications and can be especially useful if you need to separate a signal to go somewhere other than the main mix, like to a multitrack recorder. You can send just those "muted" channels to your recorder and overdub while you listen back to your prerecorded tracks at the same time in the control room.