A: 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.

Alex Rodea
Author
Alex is a former U.S. Marine avionics technician turned founder of Iron Age Guitar Accessories, a one-man shop building boutique picks, knobs, and kill-switches since 2015. He applies systems thinking, precision machining, and insights from thousands of shipped orders and customer reviews to write practical guides on tone, materials, and design for serious players.