I bought the profigold pdg4000 digital interconnect but I'm not sure it's a coaxial. On the box it says rca-rca digital interconnect for the ultimate in sound, cd, sacd, dvd and home cinema. On the net it is called the Profigold pdg4000 Oxypure Coaxial. Is this a cable I could use to connect my dvd player and amp via the coaxial inputs? Would it transfer the surround signals?? On the box is says Oxypure also and the picture that is on the net is the picture of the box but on the box itself it doesn't say coaxial... Please help!!