Used Keeley 4 Knob Compressor Effect Pedal

This used Keeley 4-Knob Compressor pedal delivers smooth, studio-style compression in a compact stompbox, perfect for tightening clean tones, adding sustain, and balancing dynamics for guitar or bass. In great condition, it features four easy controls—Sustain, Level, Attack, and Clipping—for dialing in anything from subtle polish to squashed snap. Built with a rugged metal enclosure, it runs on standard 9V DC power and offers true-bypass switching for a clean signal path.