A kill-switch is a momentary button that mutes your guitar the instant you press it and restores sound the moment you release. Players use it for crisp, rhythmic “stutter” cuts—from rapid machine-gun bursts to slow, tremolo-like pulses—adding percussive contrast between notes and chords.
It’s usually mounted near the picking hand so you can tap it in time with your riffs. Most are momentary, there are normally-closed and normally-open "shunt-to-ground" designs, and some players mimic the effect by flicking a pickup selector with one pickup turned down.
, has been a thing for decades.
They’ve grown in popularity in recent years and have become an addition to many modern guitars.
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