The Tinned Copper CAST, their no hold barred capacitor, are built with a copper tinned foil with a paper in oil with the addition of a proprietary WPIO dielectricum which necessitates several days of impregnation under high pressure.This creates a form with incredible damping properties giving a mechanical stability hitherto unheard of. On top of this casting process, a ring of hard-pressed paper strengthens the damping properties of the design helping music flow effortlessly. Duelunds DCA16GA wire lead-outs are used.