Kos, the problem isn't technological, it's legal. Regular 75 ohm coaxial cable has no problem with the slightly higher bit data transfer rates involved in DVD-A and SACD as compared to CD. The problem is copyrights and efforts to provide copy protection for them. The fear, whether paranoid or realistic, is that if the DVD-A or SACD digital data could be fed into recorders using standard connections, there would be almost unlimited piracy. Therefore the data comes out through only analog outputs, except where special connections and special equipment(not including recorders)are used.
