Used Keeley 4 Knob Compressor Effect Pedal

The Keeley 4 Knob Compressor is a studio-grade guitar effects pedal that delivers smooth, transparent compression with exceptional sustain. This used unit is in great condition and features Level, Sustain, Attack, and Clipping controls for versatile tone shaping. Built with true bypass switching and hand-built quality, it’s ideal for both clean boost and tight, punchy dynamics. Perfect for guitarists seeking professional compression in a durable, compact design. Powered by 9V battery or standard adapter.