Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in great condition—an all-time classic for smooth, studio-style compression on guitar or bass. The simple 4-knob layout (Sustain, Level, Attack, Clipping) makes it easy to add punch, sustain, and sparkle without losing dynamics. Built in a rugged metal enclosure with true bypass switching, standard 1/4" in/out, and 9V DC power operation, it’s a go-to pedal for clean tones, country snap, and articulate leads.