Used Keeley 4 Knob Compressor Effect Pedal

Add studio-smooth sustain and punch to your rig with this used Keeley 4 Knob Compressor in good condition. Featuring four easy controls—Sustain, Level, Attack, and Clipping—this compact pedal delivers everything from subtle leveling to classic squish, while preserving clarity and pick dynamics. Rugged stompbox design, standard 1/4" input/output, and 9V DC power operation make it a reliable choice for guitar or bass players chasing polished, consistent tone.