Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in good condition, delivering classic studio-style compression for guitar or bass. Features four easy controls—Sustain, Level, Attack, and Clipping—for everything from subtle smoothing to punchy squash and added harmonic edge. Built in a rugged, gig-ready enclosure with true bypass switching, standard 1/4" input/output, and 9V DC power (center-negative). A versatile go-to pedal for cleaner dynamics, tighter picking, and polished tone.