"Pigtronix showcased their new XL Fat Drive, as well as the recently released Philosopher's Rock compressor. The XL is a double pedal that incorporates the company's Class A Boost clean boost and Fat Drive overdrive into one enclosure with an effects loop placed between the two circuits to give players the option of putting additional pedals between them. The Philosopher's Rock is a simplified, two-knob version of the Pigtronix Philosopher's Tone. Retail on the Philosopher's Rock is $149, while the XL Fat Drive is $250 (available exclusively from Sam Ash Music)."