Wah Pedal. Offers the classic wah-wah effects introduced by Jimi Hendrix in the 60's with an important improvement. The original circuit design using electro-optical control allows the exclusion of the pots with all of their ill-known side effects (noise, scratching, breaking). Includes the option of "toe-down" switching between bypass and wah-wah modes. Heavy duty mechanical construction and electro-optical control system without pots ensures extended lifetime.