Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in great condition—classic studio-style compression for guitar with smooth sustain and musical punch. Simple, gig-ready controls for Level, Sustain, Attack, and Clipping let you dial in anything from subtle leveling to squashy country snap. Built in a rugged compact stompbox with true bypass switching and standard 1/4" input/output, it runs on a 9V DC center-negative supply for easy pedalboard integration.