High quality in-wall UL-C2 rated 10-gauge A/C wiring ?

Each transformer in the line adds some distortion. The neighborhood transformer couples the grunge from the neighbors on to mile line.

Filtering I understand.
What is the filtering capacity of a 2m 14ga cable?

One of the claims is better transmission.
Power lines are contaminated with DC, several 10s % HD, RF, etc.
So, the fancy cable is better able to pass the noise and grunge?!?1?!

Thanks to all of you who have responded to my requests !  I have taken the time to quickly review the latest post with links to a great education on power and grounding.  Even though I'm electronically-trained, it was a terrific refresher and really summed up what and more importantly why I should use wiring that will reduce the possibility of adding stray and induced noise.  It appears there is a lot of mis-information out there and "snake-oil".  Perhaps the high-dollar in-wall power cable is good and helps with low-noise, however I believe my choice will be 10-gauge Romex.  
Thanks again to all who have responded !  

The Audience wire is interesting, but I would actually just use cryo'd 10awg Romex myself.  VH Audio sells cryo'd 10-2 Romex for 2.99/foot, or $469 for a 250 foot roll.  The Romex will meet code for running inside walls and through attic areas.  Other wire may or may not (and might have to be run in conduit).  Some people have said they get better results with 8awg THHN, but that is going to be stranded and also needs to be run completely in a conduit.  The Romes is solid core, which is better in my opinion (even if it doesn't quite have the current cabability of 8 awg).

Under the electrical code https://www.usawire-cable.com/pdf/nec-ampacities.pdf 14ga wire is good for 20A, 8 for 40A. Continuous.

Other than large Class A amplifiers, 4  nines of HiFi systems don't ever come anywhere near even 20A. With a linear supply, that's ≈1400W.