I know regular SPDIF only does 2 channel, except in DVDs but what about Digital Coax? I'm looking to get the Asus K8V and it appears to have Digital Coax, although it's listed as SPDIF on newegg specs. I have Z680s wanted to know if I can hook them up to it and get 5.1. My DVD on my home theater uses digital coax, but I don't know if DC works the same as SPDIF.