Also called after-fade listen AFL. Signal routing within a mixing console to allow audio signals to be monitored at the level set by the fader on that input, rather than monitoring the level coming to the input, as in pre-fade listen, Aux sends are usually monitored post-fader. Because of the ambiguity of the abbreviation PFL, be sure to use AFL (after-fade listen) for post-fade listen as PFL is generally taken to denote pre-fade listen.