JOYO Blues Overdrive Guitar Pedals Hign Gain Overdrive from Vintage to Modern Tone for Electric Guitar True Bypass (BRIGHT DAY JF-25)JF 25 blues overdrive pedal delivers modern and vintage tone as well as the tube amp head of the 90's Control knobs: Level Gain Tone knobs and Vintage & Modern overdrive mode toggle switch Metal alloy case and precision components makes it solid, lightweight and portable True bypass overdrive pedal design remains electric guitar signal fully "intact" Power supply by 9V 6F22 battery or adapter (Not in the package) or JOYO 9V DC pedal power supply can