Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in great condition—classic studio-style compression and sustain for guitar or bass with the signature Keeley transparency. Simple 4-knob control layout (Sustain, Level, Attack, Clipping) makes it easy to dial in smooth leveling, punchy snap, or singing sustain without losing your tone. Rugged compact stompbox with true-bypass switching and standard 1/4" input/output, powered by a 9V battery or 9V DC center-negative supply.