Used Keeley 4 Knob Compressor Effect Pedal

Get studio-style compression on your pedalboard with this used Keeley 4 Knob Compressor in excellent condition. Loved for its smooth sustain and transparent leveling, it features four easy controls—Sustain, Level, Attack, and Clipping—for everything from subtle polish to country snap. Built in a rugged compact enclosure, it runs on standard 9V DC (center-negative) power and fits any board-ready setup. A classic compressor that enhances tone without getting in the way.