The Philosopher"s Tone Compressor/Sustainer is an ideal front end to any guitar player"s pedalboard. It can also serve as the perfect companion to the Pigtronix Mothership Guitar Synthesizer or any other pitch-tracking musical equipment, delivering more accurate tracking and increased note duration. As a bonus, the Grit control mixes a layer of smooth, diode-clipping distortion into the effect. Unlike the many compressor clones and their variations that have become so popular in the past 10 years, the Pigtronix Philosopher"s Tone is not based on a CA3080 chip. The result is more sustain and less noise. The dynamic range, touch sensitivity, overall transparency, and outright sustain of the Philosopher"s Tone are unparalleled in the crowded world of compressor pedals.Adjustable threshold and ratio controls Blend control for parallel compression Smooth, diode-clipping distortion Treble boost/cut Ultracompact design Circuit design by Howard Davis Pigtronix 15VDC adapter included True bypass