Used Keeley 4 Knob Compressor Effect Pedal

This used Keeley 4 Knob Compressor pedal delivers classic studio-style compression in a compact stompbox, perfect for adding sustain, clarity, and punch to guitar or bass. In good condition, it features four easy controls—Sustain, Level, Attack, and Clipping—for dialing in everything from subtle smoothing to tight, snappy squish. Standard 1/4" input/output and true bypass-style switching make it an effortless fit on any pedalboard.