Seymour Duncan DIAMONDHEAD Distortion Pedal with BoostAcross genres and generations, the sound of a half stack pushed hard with drive and boost has become a standard for rock tones. No genre or era of players has been more heavily defined by these iconic sounds than the classic metal and hard rock pioneers of the late seventies and eighties. Think Judas Priest, Iron Maiden, Ozzy their combination of tube heads and drive pedals resulted in some of the most iconic guitar tones of all time. Diamondhead