The Lovepedal Les Lius features a three way toggle switch that allows you to change tones from 5E3 Woody (Tweed Fender Deluxe), High Power Twin (50′s Fender Twin) and Master Volume Tchula (combination of both the 5E3 Woody and the High Power Twin). The amount of VOLUME is controlled by the first knob. The second knob is a second gain stage which emulates what happens when you crank one of these vintage low wattage amplifiers. Features Dual Channel / 9VDC Input High Power Switch / Selectable Headroom True Bypass