A very high end capacitor should be absolutely neutral and should pass signals undistorted. The Audyn True Copper Cap does ...not have a seperate sound or sound picture. Absolutely exact, accurate and honest reproduction of the signals that enter. It simply does what it should. Full OFC copper-foil polypropylene capacitor for exacting and high quality loudspeaker applications. No contamination by mixtures of various metals and fairylike oils or wax. Liquid compounds where it is unclear what it is exactly and we think that the long-term quality is questionable. Therefore we decided to use only TRUE COPPER. - Copper Copper foil - Tritec 7x0.5 mm tinned wire leads gives bigger surface by flexible connections, - 630 VDC - Tolerance : 2% - No selfhealing construction - IEC60384-1, EN130000, Ris >30000/C(Mohm,uF) - Test V between terminals: Ur:630VDC, Ut:650VDC 1min. at 25C - Test V between shor connected terminalsand case: 1000VDC, 1min at 25C - Made for passive crossover network for loudspeakers.