The Boss PW-2 Power Driver capitalizes on the throaty gain and punch of the company's better-known models like the OD-2 and adds even more features like separate Fat and Muscle knobs for control over bass and mids respectively in addition to the controls for level and drive. Built with a more focused mids section than its contemporaries or predecessors, this is one of Boss's rarer pedals, having only been produced for less than a year between 1996 and 1997.