SUPER-FLEX cable was designed to be the best audio cable that we could possibly make. Both home theatre and automotive environments were considered; the cable is made to last indefinitely in either application. Highly pure OFC (oxygen free copper) is used throughout. Double shielding blocks external magnetic noise; heavy PVC outer jacket is resistant to chemicals, abrasion and heat. The RCA connectors are made from the best materials and then gold plated to assure a resistance-free, quality connection . In any audio application, you are not going to be able to find a better cable for pure audio and great longevity.