Solo

A function commonly found on mixing consoles, soloing a channel is the opposite of pushing a mute switch; solo mutes all channels EXCEPT the one being soloed. In general, solo only affects signals in the control room monitors, or headphones on a live console. It does not mute signal being sent out other outputs. This allows the engineer to listen to individual signals while not interfering with other mixer functions (feeding recorders or PA amplifiers, etc.).