When people talk about Wah pedals, they're talking about the Crybaby. This is the one that creates some of the most timeless sounds in rock. The pedal that would eventually become the Crybaby was first created in 1966 and was an instant hit with players like Jimi Hendrix and Eric Clapton who have contributed to the Crybaby's huge popularity to this day. Powered by 9 volt battery or AC adaptor