The Duke combines the classic voicing of Vox AC30 with the grind of the JCM800. This amp is really a swiss army knife of tones. It has a mode switch on the back panel that allows you to choose between my take on the classic AC30 top boost circuit and a much higher gain voicing,imagine if a JCM800 and an AC30 had a bastard love child. The Duke goes from sweet round jangly cleans all the way through hair metal. Even at the highest gain levels your clean tone is only a turn of your guitars volume knob away.