Why do digital cables sound different?

Sean,

I need to talk to your tax guy :-)

I agree with you 100% its all about the benjamins$$$
I never said i like mismatches... Why do you think i
spent big bucks on my cables... But there are still
other problems on the chain and unless you youself
are designing AND fabricating the product including
the transistors you are at the mercy of ACCEPTABLE
tolerances. Welcome to the real world.. I dont like
it either BUT its reality.

Maybe you can explain to me how to get better impedance
control than what the fab houses can fabricate the product
for? In other words we design these "low tech" 48 layer
10 thousand connection PCB's running at 10ghz and 50 ohms dead nuts on... Its like having 10 thousand interconnects in a 5 sq foot area... What are we gonna do have kimber cable wire us up something?
We are forced to rely on material and fabrication tolerances. There are only two board houses IN THE WORLD that can fab that PCB for that"low tech" backbone router.

How would you do it?

I would probably have to agree with the possible theory that differences in cable geometry(or connections) will cause differences in the delicate structure of sound to different degrees.(my theory..and only a theory). I DO FIND that cables sound very very different often, and DO AFFECT THE SOUND MORE DRAMATICALLY IN BETTER MORE RESOLVED SYSTEMS for sure. I am indeed a believer, from working in 5 high end stores, and being around high end audio and custom install for more than 20 years now, that cables make a difference!
I also find that the trend amoung those advocates that cables ALL BASICALLY SOUND THE SAME(if matched from a mechanical impedance standpoint, etc), THEIR SYSTEMS TEND TO ALL SOUND POOR OVERALL!!!
I once had a long conversation with John Dunlavy(Thanks john for the contributions to audio) at his factory about cables. He is an advocate that "CABLES IS CABLES" basically. The irony there is that his systems in his factory where, HANDS DOWN, the single WORST SOUNDING set-up's I've ever heard from a "HIGHER END" speaker manufacturer!!!! Infact, other people touring the factory were asking me why his speakers sounded so bad....I litterally had to defend his speaker's "merits", and say that "I'd gotten much better sound from his speakers elsewhere!"
On another occasion, I was at CES in Vegas a year ago, where I stumbled in to a room set up with Merlin VSM's with some nice high end gear. I asked the guy running the room "what wires and cables are you using?" He actually looked at me and said "you're joking right?"..."surely you don't think cables make a differnce, do you?" I said, "no comment!" I proceeded to listen to the set-up when he started playing the music, and IMMEDIATELY BOLTED UP FROM MY CHAIR!!! Not only did I hear the most bright and analytically sound from any of the rooms I encountered during the trip, but everyone else in the room immediately took issue with the sound as well! I didn't even stop to say anything to him...I think he pondered it all on his own from that point out.
My experiences, basically, is that the "cables-is-cables" advocates, are usually "closed-in" with their thinking, and can't see past their brains!!(limited processor and hardrive I presume...) These are the one's I usually find have the poorest sounding, if even well intentioned, systems!..go figure

Sean,

Can i still have your tax guys number? just kidding.
I agree...audio and high speed are two different worlds
and I do get them confused sometimes...

Forever,

I think you brought up some very good points. The more
i think about it the more im thinking perfect length
of wires might not be ideal for audio. Hmmm.. So what do
you say guys lets sell different lenght MATCHED cables
and get rich?

Best regards

forever, are you saying the reason the systems you site as sounding lousy was because of the attitudes of the owners, or that they chose bad cables? I douby in either case they were using lamp cord

steve.