For a DAC manufacturer to add a fully isolated data interface to carry audio, let's say 32/784 to cover all possible cases, we are talking <$10 in volume, perhaps $25-50 for a low volume manufacturer and I am being pretty generous.
Your analysis of fiber optic is correct, but keep in mind Ethernet already is galvanically isolated though there is a path for high frequency noise.
Your analysis of fiber optic is correct, but keep in mind Ethernet already is galvanically isolated though there is a path for high frequency noise.
yyzsantabarbara1,909 posts12-28-2020 3:00am My understanding is that Fibre Optical cable (I do not mean Toslink) cannot carry analog noise from the 1's and 0's being transferred on the Ethernet wire.