Dropping the Hammer - Cloning the Precision Drive

The Horizon Devices Precision Drive is an exceptionally nice overdrive pedal really geared toward metal styles. It is designed to pair well with both solid state and tube amps, and provides a wide array of tone and attack options for the player to optimize their sound. I'd had a request for a dinosaur version of the pedal, so I went in search of a good schematic or board and went from there.