Used Keeley 4 Knob Compressor Effect Pedal

Used Keeley 4 Knob Compressor in excellent condition, offering studio-grade compression with Level, Sustain, Attack, and Clipping controls for total tone shaping. Built in the USA, this pedal delivers ultra-low noise and smooth dynamic response, ideal for tightening up clean tones or adding sustain to solos. Perfect for guitarists seeking pro-level compression in a compact format with true bypass design for tone preservation. Powered by 9V battery or standard center-negative power supply.