Anole said:
$1000 audio cables - hogwash.
Finally a voice of sanity!
The ONLY thing you can do to any speaker cable to make it better is to make it larger. If we were talking high frequencies (and by that I mean far above audio frequencies, in the R.F. range) then stranded wire might be better than solid wire because very high frequencies tend to travel on the surface of the wire, whereas D.C., household A.C., and audio frequencies use the entire wire. But most cable sold for audio purposes tends to be stranded anyway.
The real problem is that regular (e.g. cheapo) speaker cable tends to be of very small gauge AND people nowadays want to pump a lot of power through their speakers (nothing like going prematurely deaf, but I digress). So along comes a "premium" cable company and they make much larger gauge cable (which is good) with very finely stranded wires (which is expensive AND unnecessary).
The dirty little secret is that you could go to an electrical supply house, get some heavy duty appliance cord, and it would work just as well. Even zip-type lamp cord (which is usually about 18 gauge) is larger than the cheapo speaker wire.
Ah, but you go to a store and you listen through one of those devices that purports to show the difference between regular wire and the expensive wire. Well here is the question you should be asking yourself - what, exactly, is in that little black box?
Let's suppose, just hypothetically, that they have a coil of a few hundred feet of "regular" speaker wire (which is, of course, the smallest wire they can find - think the stuff that connected the speakers on your first stereo when you were a kid) and then a few hundred feet of their wire. In the first place, the smaller wire will have much more resistance and that alone will make it sound like crap the minute you try and push any significant power through it. But also, if they coil up the wire in just the right way, it can act as an inductor. Another name for an inductor is a choke coil, and a choke coil blocks higher frequencies while passing lower ones. So, there goes your high frequency response.
I just get REALLY suspicious of "black box" demonstrators because you cannot see what they've got inside, and since they want to demonstrate their product in the best possible light, who knows what "tricks" might be employed?
I'm certainly not denying that larger gauge wire makes a difference - it really can, especially at high power levels or on longer runs. And I'm not denying that finely-stranded wire is easier to work with, and lays flatter on the carpet! But if you don't want to pay a high price, it's certainly possible to use large-gauge wire that's not so finely stranded (and doesn't come with a pricey brand name), and to many people it will sound exactly the same.
Now I realize some people will argue the point, but what I have found is that that some people are "brand name snobs" that think that ANYTHING with a well known brand name on it is better than anything without one. Hey, if you feel that way, fine, it's your money. All I know is that everything I've ever learned about how wire conducts electricity suggest that in this particular application, it's the size (of the wire) that's important - everything else is appearance and marketing shinola!