Turn Lead to Gold with the Pigtronix Philosopher's Tone Micro. Famous for its noiseless clean sustain, the Philosopher's Tone stands out as a uniquely powerful guitar effect in the crowded world of compressor pedals. The Philosopher's Tone Micro packs all of the optical compression and unrivaled sustain of the original award winning Pigtronix pedal into a micro size chassis that runs on standard 9V external power. In addition to VOLUME and SUSTAIN controls, the Philosopher's Tone Micro features a parallel BLEND knob that allows the musician to mix their instrument's original tone with the compressed sound effect. This technique restores natural pick-attack and allows more extreme sustain settings to remain musical. The TREBLE control provides up to 6db cut or boost at 2KHz for fine tuning the frequency response of the effect. The Philosopher's Tone Micro features True-bypass switching and internal 18V power rails for maximum clean headroom, even when used with hot pickups and line level signals. Practitioners of the mystical and ancient art of alchemy long sought an element called the Philosopher's Stone, believing that, if found, it could turn lead into gold and bestow immortality upon the person who wielded it. The Philosopher's Tone Micro represents an analog musical equivalent to this mythical substance in the world of guitar. "People have been trying to get clean sustain from a pedal for decades, and the alchemists at Pigtronix seems to have found the secret to make it happen."-Art Thompson, Guitar Player Magazine Pigtronix Philosopher's Tone Micro Effects Pedal Features: Noiseless Clean Sustain Blend control for Parallel Compression Treble EQ for Boost or Cut at 2kHz Runs on standard 9V external power Internal 18V power for max headroom True Bypass switching Size = 3.75" x 1.5" x 1.75"