This refers to a mixer’s console auxiliary send that is connected before a channel’s output fader, usually called a pre-fader send. For example, if a pre-fader send is used to route part of a vocal track to a stage monitor, when the main vocal channel’s level is raised, the amount sent to the monitor would be unchanged. Monitor sends are usually used for foldback or cue mixes. See effects send. Also called a foldback send.