Used Keeley 4 Knob Compressor Effect Pedal

The Used Keeley 4 Knob Compressor delivers rich, studio-grade compression in a compact stompbox, ideal for refining tone and boosting sustain. In great condition, this pedal features controls for Sustain, Level, Tone, and Attack, offering precise signal shaping. Built with true bypass circuitry, it preserves your guitar’s original tone when disengaged. Perfect for clean tone enhancement or tightening high-gain rigs, the Keeley 4 Knob Compressor is a trusted tool for serious guitarists.