Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in fair condition, delivering the classic Keeley squeeze for tighter rhythm, smoother leads, and added sustain. Four easy controls—Sustain, Level, Attack, and Clipping—make it simple to dial in anything from subtle leveling to punchy compression. Built for standard guitar/bass pedalboards with a compact stompbox design, it uses typical 9V DC power (center-negative) and true-bypass-style switching for a clean signal when off.