Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in great condition—legendary studio-style squeeze and sustain for guitar or bass. Dial in the perfect feel with Sustain, Level, Attack, and Clipping controls, from subtle leveling to punchy country snap. Built in a rugged compact stompbox with true bypass switching, standard 1/4" input/output jacks, and 9V DC center-negative power. A go-to compressor for cleaner dynamics, thicker tone, and smooth, articulate notes.