Having been introduced in 1987 the WH10 wah pedal has had a strong following for guitar and bass range switch to mix control all in a lightweight package - loved by many including John Frusciante. The WH10V3 is a return to the original WH10 sound but with additional value adds from previous editions including switchable bypass (True and Buffered) - with no loss of strength or frequencies in the True Bypass, and less on/off noise in the Buffered Bypass. The durability of the WH10V2 built with the die-case case to, the popular pedal has depth control, frequency range (guitar/bass) in a small 815gram package. Powered by a 9V battery or External DC 9V AC adaptor.