Greer Amplification Ghetto Stomp Overdrive Guitar Pedal Classic small Tweed and VALCO type tones! Stacks well with other drives! Very flexible, with multiple tones available! Natural amp-like feel, touch sensitive, very responsive to pick attack! True Bypass! Uses 9Volt battery or standard neg. center, 2.1mm power supply. Built with top quality components. Lifetime Warranty to the original owner!