I would have to agree with the impedance argument, if a digital connection says 75ohm you need a 75ohm capable cable that is purpose designed to sound good doing what you want to use it for. I would suggest looking at Canare's RCAP true 75ohm RCA connectors $3-$5 each and some of the canare LV-77S cable I think it is $2 a foot or so. That combination will outperform $60-$100 digital interconnects. Canare takes cables very very seriously and they are highly regarded by the profesional audio world.
Why do digital cables sound different?
I have been talking to a few e-mail buddies and have a question that isn't being satisfactorily answered this far. So...I'm asking the experts on the forum to pitch in. This has probably been asked before but I can't find any references for it. Can someone explain why one DIGITAL cable (coaxial, BNC, etc.) can sound different than another? There are also similar claims for Toslink. In my mind, we're just trying to move bits from one place to another. Doesn't the digital stream get reconstituted and re-clocked on the receiving end anyway? Please enlighten me and maybe send along some URLs for my edification. Thanks, Dan