Cryongenically treated in-wall AC power wire


I have a high end sound system and am building a new house.  I would like to have a dedicated electrical line installed for my system, to run from the electrical outlets in my music room to the breaker box.  The builder asked me how long I wanted the wire to be, which runs from the outlets to the breaker box.  I have no idea.  I could place it as close as several feet or much longer.  The wire is $20/foot.  So, here are my questions:

1.  If you want to install a dedicated electrical line for your sound system how close should the electrical outlets be to the breaker box, or does it make a difference?  In other words, is there a minimum length of cryogenically treated wire that I will want in the wall stretching from the outlets to the fuse box?

2.  I assume that using cryogenically treated wire and electrical outlets will reduce noise.  Does anyone have any experience with cryogenically treated wire?

gapperis123
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$20/foot is really steep -- one of the best in wall cables is JPS and that's $30/foot but this stuff really adds up with the long lengths most residential AC systems require. I used JPS in a prior installation but it's a bear to work with being 10AWG
https://www.thecableco.com/power-ac-in-wall-power-cord-bulk.html

Much cheaper is Synergistic Research Quantum Tunneled Romex (as I recall I paid less than $500 for a full reel) -- enquire of your favorite SR dealer and they can get it for you

As to whether these cables make a difference it's obviously next to impossible to do a real A:B but if you're doing a new in wall set up for the modest cost of the SR level solution it hardly seems worth skimping

I have experience with a friend going through different steps of upgrading his dedicated lines. These lines were not very long, approximately 20 feet. There was a definite improvement going from 12 gauge to 10 gauge, and also an improvement going from basic 10-2 w/g  Romex to cryo'd 10-2 w/g Romex. 

$20/foot seems extremely high. He purchased the cryo'd Romex from VH Audio for $2.99/foot.

Shouldn’t the in-wall wire length depend on room layout and placement of your gear? What length will you need to feed the receptacles that will power your gear? Incidentally, I’d suggest 3 or at least 2 dedicated lines for your audio gear.