Used Keeley 4 Knob Compressor Effect Pedal

The Keeley 4 Knob Compressor is a studio-grade compression pedal designed for guitarists seeking rich sustain, dynamic control, and enhanced tone shaping. This used unit is in good condition with all functions fully operational and only minor cosmetic wear. Featuring Sustain, Level, Attack, and Clipping controls, the 4 Knob Compressor offers versatile tonal options—from subtle smoothness to punchy compression ideal for both clean and overdriven settings. Built with high-grade components and true bypass switching, it delivers transparent performance without coloring your tone. Whether you're tightening up funk rhythms or adding singing sustain to solos, this pedal remains a favorite among tone enthusiasts. Powered by a standard 9V DC adapter or 9V battery (not included), it's ready to elevate your sound straight out of the box.