I just had a similar experience when I had to replace an antiquated master breaker panel. So I figured while I had 3 electricians here, I’d have them run an isolated 20A line to my listening room. I bought audiophile receptacles to fill a quad box and it all went smooth. Yes, the weirdest thing was two ground circuits (one new, one replacing the old original to meet code). I now have some very nice copper decorating the rear wall of my home.
I certainly had no idea what to expect from this move. I was really gambling a bit because it’s not cheap to do this. However, my experience over the past 50 years as an audiophile and high-end retailer has taught me the TRUTH: that any cable change causes changes in the final signal. So I was eager to get it going.
I use a big Odyssey Stratos DM power amp with the Mk II version of the Dynaudio Contour 60’s. Peachtree pre/DAC, streaming Qobuz.
To make a long story shorter, I listened critically every day and heard a slow but unmistakable improvement in all areas of sound quality we hold dear. In particular, the noise floor dropped audibly to blacker. It took about 30 days to plateau for me. I think it’s definitely worth it if you have an excuse like I did. Any audio freak doing new construction is even more insane if she doesn’t put it in the home’s elec specs.
Incidentally, my boss electrician did look at me sideways when I first told him what I wanted, but he didn’t even peep. His helper electricians seemed to stifle a smile as they ran the lines. They had a real sucker! I can only imagine what they would have said if I had asked for Cardas copper!
I say go for it!