Used Keeley 4 Knob Compressor Effect Pedal

The used Keeley 4 Knob Compressor is in great condition, delivering studio-grade compression with sustain, level, attack, and clipping controls for precise tone shaping. Built in the USA and based on the classic Ross design, it offers quiet operation and exceptional clarity. Ideal for clean boosts or tightening up overdrives, this pedal runs on a standard 9V power supply and is perfect for guitarists seeking dynamic control in a durable, compact enclosure.