A little History lesson on, "High- End" cables:

Audiophile meeting
https://www.youtube.com/watch?time_continue=229&v=3UQDTZcpsDE

atom1 Audiophile meeting

 Such a great spoof. However, it captures the truth so well. High end cable companies are perfectly setup to capitalize on subjective, facts. Like fashion, cable companies will continue to improve their wire. Cables don't wear out as fast as other components, so the science (?) will continue to support the latest and greatest new items. Perhaps a better upgrade than very expensive cable, check out the  Blackbody Ambient Field Conditioner. 

If you calculate the resistance of typical speaker cables at DC vs 20,000 Hz, for 2 meters of 8 gauge wire is 0.008 Ohms for DC and 0.016 Ohms for the skin effect at 20,000 Hz. Put this in series with a 4 Ohm DC resistance Magnepan speaker and compare the total impedance. Skin effect accounts for less than 0.02 dB at higher frequencies than anyone can hear. Therefore, if a cable company advertises by claiming to correct for skin effect: litz construction or flat ribbon cables, that should discredit them in general.
PS. Don't feel bad, nonoise, I just saw an advertisement for tungsten innerconnect cables claiming crazier than what you just lampooned.

To add to DrBarney1’s post (and I agree with his math), it is possible that in some circumstances skin effect in a speaker cable can actually be beneficial. While it will have negligible effects at audio frequencies, as he indicated, it seems conceivable that the resistance rise it causes at RF frequencies could reduce RFI that is picked up by the cable and introduced into the feedback loop of the amplifier (assuming the amp has a feedback loop). RFI that might otherwise have audible consequences as a result of effects such as intermodulation or AM demodulation, that may occur within the amp.

And in connection with that possibility I note the following statement in the article:

Hiraga pointed out that while theoretically the skin effect appears to be negligible for frequencies below 200kHz, subjective listening tests suggest otherwise. Apparently, he started experimenting as early as 1972 with Litz-type speaker cable, which consists of a large number of individually insulated fine wires twisted or braided into a uniform pattern in order to maximize conductor surface area. He substituted Litz wire between an amplifier and an Onken 5000T tweeter and discovered that as the number of strands increased, so did the impression of detail and definition, accompanied by the perception of additional distortion. The obvious conclusion was that one should not shoot the messenger since the Litz cable was allowing more of the message to get through.

Perhaps the "obvious conclusion" that is stated is not so obvious, and instead "the impression of detail and definition, accompanied by the perception of additional distortion" was due to the effects of RFI that I referred to. Those effects resulting in inaccuracies that were subjectively preferable, and were maximized by a reduction in skin effect.

Regards,
-- Al

No doubt the brickbats descending on some pricey mega-cables (or many others) are well deserved, but, wading into better cables years ago with no knowledge or expectations, my ears instantly recognized a favorable difference, since reconfirmed many times as I've gone up the ladder.  (Notwithstanding my remaining opinion that cables are perhaps the biggest snake oil area in audiophilia--some of the prices are beyond ridiculous.)  I've recently transitioned from very well-known and respected cables that made a nice difference in my system to a brand with a very radically different approach, Omega Mikro.  Their cables are "planar", i.e. extremely thin single ribbons of copper with minimal dielectric, almost no dielectric in some models.  The company's emphasis is on the importance of timing, not the standard criteria seen in most cable designs.  Pricewise, compared to performance, they are a bargain.  
They've elevated my already excellent system to a new level--clean, pure, highly resolved, complete music.  They require careful handling and a bit more attention in selecting, but once it you are set for enchanting sound.
Jim Heckman