The Keeley 4 Knob Compressor delivers the same audiophile quality and tone as the 2 Knob but with more control at your fingertips. The standard Sustain and Level controls give you the option to add just the right amount of compression as well as matching unity gain.The benefit of having the Attack Speed and Input Sensitivity on the outside of the pedal (unlike the circuit mounted 2knob version) enables you to feed any instrument through the pedal. The Keeley Compressor is perfect for high output guitars, basses, line level instruments, recording, etc. All components are top notch which means zero unwanted distortion for a super transparent tone. Add sustain to those clean solos or tighten up those chords for a more focused sound. Features metal film resistors and capacitors, true bypass, and transistors hand matched for gain within 1%. You can't ignore the fact that pro musicians across the globe are using Keeley Compressor! 

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