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RE: TAS this:

"Yea, sort of. It does provide galvanic isolation so it is incapable of participating in a ground loop (isn't that a type of Morris dance?). However that doesn't mean that interference can't be passed along. Let's say that you've got noise on your power buss (and who doesn't), it can modulate the toslink transmitter's amplitude which will unfortunately get demodulated at the receiver as FM (jitter) due to the finite bandwidth of the system. Power supply noise at the receiver can likewise affect the slicing point of the receiver and cause the same effect."

-- Which is, of course, why I qualified my remark with accurate data and relative accuracy of data timing.

"Probably the best approach is to try every option at your disposal to connect two pieces of gear and choose the one that sounds the best."

-- I have and I don't hear jitter. Or at least I don't hear a difference I have the patience to differentiate between optical, digital coax and USB. My investigations keep getting distracted music.

"There isn't a universal truth because so much depends on how things are implemented and what else is going on in the system. And even on the listener who may find some defects more tolerable than others."

I hear that. As I said, I don't hear jitter, but after years of phones and active speakers, I can't seem to stop hearing the distortions of passive crossovers, even in very good systems. If jitter manifests itself as it is often described, as harsh and edgy upper mids/trebles, I'm at a loss as to how anyone hears it on passive speaker systems, the inherent weaknesses of which I would expect to mask anything remotely subtle. But as you've said, we all have our sensitivities.

P





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