Jensen make 4 different types of copper foil capacitors, all with the same internal make up but fitted inside different enclosures. We have the lower cost aluminium can, highly popular for those on a budget. Then we have the copper can type, probably the more well known of copper foil types, then the paper can type and ceramic can type. All these enclosures offer slighly different characteristics to the sound. The ceramic can version is amazingly controlled, with great detailing and slam, a superb performer. Fitted with pure silver leadouts. 1mm diameter, 50mm / 60mm length.