Used Keeley 4 Knob Compressor Effect Pedal

Smooth, studio-style compression in a rugged stompbox: this used Keeley 4 Knob Compressor is in great condition and delivers the classic Keeley sustain and sparkle guitarists love. Four simple controls—Sustain, Level, Attack, and Clipping—make it easy to dial in anything from subtle leveling to singing lead sustain. Standard 1/4" input/output, true-bypass switching, and 9V DC power for reliable pedalboard integration.