Symphony II IC enhances the presentation capabilities of better electronics. Its silky midrange and rich, extended bass retrieval abilities convey all the natural texture of vocals and instruments. It incorporates special Foam TPR insulation around OFHC copper conductor groups in a balanced Star Quad design. Great for mid level integrated amps, components with discreet analog audio circuitry, better subwoofers and better digital equipment! Y cables have a 3″-8″ split at the load end, dividing the signal into 2 connectors. They are primarily used for dual subwoofer inputs and splitting a source or pre-amp signal to multiple load locations. Advanced materials, proprietary designs, meticulous engineering, special manufacturing processes and skilled American craftsmen make our cables highly sought after, regarded and respected in the AV industry on a worldwide basis.