Short for “multiple”, mult refers to the parallel wiring of the jacks in a patchbay. Several jacks are wired together so that input to one of them will feed all the others; a mult is a passive splitter or “y” connection. Mult is also used as a verb by audio engineers, as in “We’ll mult the output of your Casio CZ-101 so that it feeds all 108 inputs on your Euphonix console…”

