In a console, pre-fade listen is a one of several possible means of overriding the normal monitor signal routing for various purposes. PFL generally sends a signal to monitor outputs regardless of the setting of that channel’s fader, and simultaneously mutes the other channels. In other words, PFL allows you to solo a channel even if the fader is pulled all the way down. Note that on most consoles, this affects monitors only, and does not interfere with main, tape, or aux outs. In broadcast situations, PFL is often referred to as “cueing”.