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Music servers and other computer based digital audio technologies.

RE: Let the grenade throwing begin...

Optical out (TosLink) provides great isolation from the RFI of the computer. (You will still want to put a power line filter on the computer to keep the RFI from its switching power supply out of the rest of your system.)

The problem with TosLink is that it is S/PDIF, which inherently adds jitter. The faster the rise time of the data link, the less jitter gets added. TosLink is pretty slow and the rise times are slow enough that it can barely handle the data rates for S/PDIF. So there is more jitter added than with a coaxial cable. Therefore TosLink is better than coax in one way and worse in another.

The end result will depend on how well your external DAC rejects jitter. Unfortunately there is no such thing as an S/PDIF DAC that completely rejects jitter, except for the Chord. It has a big buffer and it takes 4 seconds after you hit play before you hear music.


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