Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in great condition—an industry-standard comp for smooth sustain, tight dynamics, and studio-like polish on stage. Simple 4-control layout (Sustain, Level, Attack, Clipping) makes it easy to dial in subtle leveling or rich, squishy compression without losing clarity. Built in a rugged metal enclosure with standard 1/4" input/output and true-bypass switching, it runs on a 9V supply for reliable pedalboard integration.