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, and Clipping) make it easy to add smooth sustain, tighten dynamics, and enhance pick attack for guitar or bass. Built with true bypass switching and standard 1/4" input/output, it runs on a 9V DC center-negative supply for easy pedalboard integration. A go-to choice for clean, punchy tone and polished feel.