Building a house with dedicated stereo room-advice

Shouldn't you be consulting professionals instead of asking for advice here?

With all due respect to differing opinions, asking for advice based on actual experience can be extremely valuable. That's where A-gon members can be most helpful. Professionals will sometimes give recommendations that favor their own interests.

What about your transformer off main line? Do you share it? is it old? Are you in a urban area? What about the line from transformer is it lower gauge old or new? I would suggest a separate service for audio room all outlets run direct to breaker at min use hospital grade outlets. Many cant not address the transformer but when I has able to get one just for my home my AC cleaned up so much I have no need for a re-generator or much filtration.

I am also looking to build my own house and will be looking to customize my media room to fit 2ch. I will be following this thread and emailing Agear.

What are the basics that every audiophile should have in their listening room?

Dedicated 20amp circuits and an isolated room? Probably something to block or disperse first reflections off the rear wall, side wall, and ceiling?

I'd recommend reading "Premium Home Theater" by Earl Geddes. Don't remember it going into electrical distribution per se, but at the very least it will give you a working knowledge of the basic concepts of and what it takes to build a room that sounds good. And although it looks like the ASC system incorporates many of the concepts found in the book it probably comes at a fairly high premium. After reading the book you may find you can achieve much the same results in your own (with your contractor of course) using things like Dietrich resilient channels, green glue, etc. rather than ASC products. I'm not a handyman and can barely nail two pieces of wood together, but after reading that book I'd feel comfortable working with a contractor I know and trust to construct a good sounding room (which is exactly what I plan to do). Then again, if you're willing to pay for the ASC system it looks like it addresses the main issues assuming it's implemented properly. FWIW and best of luck.