I've got a relatively old Rotel pre/pro that lacks a Dolby Digital processor, so I'm using the DD processing from my Pioneer DVD player(mainly used as a tranport to a DAC for 2-channel). Had a hard time finding any, but I eventually found one from Monster Cable and MSB(does anyone know of any others?). I went with the MSB and it sounds ok but a little rolled off on top, but this is probably more due to the DD processor in the DVD player than the cable. I don't know because I've never had the opportunity to compare different cables, but the MSB is probably worth a shot. By the way, I got mine from Northern Audio Exchange by mail and was sent what was obviously a used cable, so beware. Best of luck.
Tim
Tim