Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in great condition—classic studio-style compression in a compact stompbox. Four intuitive controls (Sustain, Level, Attack, Clipping) let you dial in everything from subtle leveling to punchy, squashed sustain, while the clipping control adds smooth single-coil sparkle or humbucker thickness. Built in a rugged metal enclosure with standard 1/4" in/out and 9V DC power (center-negative), it’s a go-to upgrade for clean tones and dynamic consistency.