Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in good condition—an industry-standard compressor pedal that delivers smooth sustain, tighter dynamics, and added clarity for electric guitar or bass. Four intuitive controls (Sustain, Level, Attack, and Clipping) make it easy to dial in anything from subtle leveling to punchy, studio-style compression. Built in a rugged compact enclosure with true-bypass switching and standard 1/4" in/out, it runs on 9V DC for reliable pedalboard power.