(1) A gain control on a sound reinforcement or recording console that controls the level of a mixture of signals whose levels have been set by the individual channel-mixing pots. A console will have a master gain control for each output signal.

(2) The final version of a performance which will be used for the production of copies in a film production; this is the master dub. See APRS label system, bin-loop masterchipcut (3), direct metal masteringdirect-to-discedit decision list (EDL), edit masterglass masterlacquer masterpost-productionstampertransfertwo-trackmaster tapemastering lathe.

(4) One device within a MIDI network or recording/dubbing chain which provides the master clock.