Used Keeley 4 Knob Compressor Effect Pedal

Get classic studio-style compression in a compact stompbox with this used Keeley 4 Knob Compressor in great condition. Known for smooth sustain and punchy, transparent leveling, it’s perfect for tightening clean tones, adding sparkle, or enhancing lead lines. Simple 4-knob control set—Sustain, Level, Attack, and Clipping—lets you dial in everything from subtle dynamics control to rich, singing sustain. Standard 1/4" in/out and 9V DC power.