DESC: Effects pedal. 1" L x 4" W x 2.5" D. 3.7 lbs. Made by Dunlop. This is the original wah-wah pedal used to create the vintage sounds of rock and roll. Used by such greats as Jimi Hendrix, Eric Clapton, Steve Vai, Joe Satriani and numerous others. Features heavy die cast construction for years of reliability, 100k ohm Hot Potz potentiometer that allows for that quick, abrupt wah sound. Powered by the Dunlop ECB-03 AC Adapter and/or 9 volt battery.