ne_surfer - Now you've done it. You've opened the door to a new round of debates over cable and wire.
Having a data background, I also thought at first that the digital signal was either good or it was bad, no middle ground. Totally a binary situation. But I've read a bit about it, and also some posts from some other knowledgeable folks on the board (RG, for one). I've come to believe that in fact digital is not quite so binary, so to speak.
Since there is no error detection/retransmission in this digital world, there is the possibility of lost bits that are made up for by the receiving equipment, which usually just fills in the blank with an average of what was on either side of it, I believe. There are things like jitter, etc... that can happen as well (sort of like doing video over an IP/public network).
So, I think it is possible that better cable/fiber will yield better results. The question is, can YOU hear it and is it worth the money to you to buy them. A very subjective decision, indeed.
All, of course, is JMHO.
Doug
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My System