Used Keeley 4 Knob Compressor Effect Pedal

Dial in studio-smooth sustain with this used Keeley 4 Knob Compressor, a classic stompbox known for transparent leveling and musical punch. In great condition, it features four easy controls—Sustain, Level, Attack, and Clipping—for everything from subtle polish to country snap and soaring leads. Built in a rugged compact enclosure, it runs on standard 9V power and delivers low-noise compression that keeps your tone clear and responsive on stage or in the studio.