Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in Excellent condition, delivering classic studio-style sustain and smooth, transparent leveling for guitar or bass. Four intuitive controls—Sustain, Level, Attack, and Clipping—make it easy to dial in everything from subtle polish to punchy country snap. Built in a rugged stompbox enclosure with true bypass switching, standard 1/4" input/output, and 9V DC pedalboard-friendly power, it’s a proven go-to compressor for tightening dynamics and enhancing tone.