Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in fair condition, delivering classic studio-style compression in a compact stompbox. Four easy controls—Sustain, Level, Attack, and Clipping—let you dial in smooth leveling, added punch, or bright pop for guitar or bass. Rugged metal enclosure with standard 1/4" input/output jacks and 9V DC power. Expect visible wear, but a proven tone tool for tightening cleans, boosting sustain, and enhancing dynamics.