I honestly don’t remember where I read it, and yes I know most of the back bones, on the net are fiber optic cables, mostly OC 128 or OC 3, I do know and the transisters that conver the eletrical signal to optical signal are not very suseptible to delays. But the reason that the intenet uses optics is because of the infinat more bandwidth that fiber optics provides over a copper connection..and with audio there is not a need for infinate amounts of bandwidth your only carrying 5 channels of audio. So in the end I pperfer copper just due to the fact that your not changing the signal from eletrical to optic back to eletric.. and there isn't reall a “real” reason for my preference, I just like it.
