Used Keeley 4 Knob Compressor Effect Pedal

The used Keeley 4 Knob Compressor Effect Pedal delivers pro-level compression with enhanced tone control in a compact, road-ready package. Known for its studio-grade performance, this pedal features four precision knobs—Sustain, Level, Attack, and Clipping—to let you dial in everything from smooth sustain to tight, punchy dynamics. Ideal for guitarists seeking clarity and control, it retains signal integrity across a wide range of styles. This unit is in Good condition with some cosmetic wear but functions perfectly. Built with true bypass switching and high-quality components, the Keeley 4 Knob Compressor is powered by a standard 9V DC power supply (not included). Whether tightening up clean tones or adding sustain to leads, this pedal remains a favorite for players who demand professional-quality tone shaping.