"The NEP Series power cables use patented UP-OCC technology. UP-OCC Silver is the finest Silver available. This cable uses multi-size stands which yield a 13 gauge equivalent. This 3/13 construction (2x13 UPOCC Silver and 1x13 Silver plated OFC) is "quad" shielded with both aluminum/mylar and braided tinned OFC (braid/foil/braid/foil). " Quoted from Sonic Craft.