Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in excellent condition, delivering studio-style sustain and smooth leveling for guitar or bass. Easy 4-control layout (Sustain, Level, Attack, Clipping) lets you dial in anything from subtle polish to punchy country snap while keeping your dynamics musical. Built in a rugged compact stompbox, it runs on a standard 9V pedal power supply or battery and features true bypass for a clear, uncolored signal when off.