Hi Iostinato,
I also live in Austin and built a good sized dedicated room about 4 years ago. I went with a 10KVA Isolation transformer that feeds 12 dedicated 20 amp outlets, dedicated breaker box with bolt in breakers, solid core 10 gauge copper wiring which is manually twisted on 1" centers run through flexible steel conduit, isolated ground outlets, etc. The transformer that I used has some special options that are specific to audio applications. The transformer is not wall mountable but can be located either outdoors (with heavy duty case) or indoors (perhaps in a garage). They range in size from 5KVA - 25KVA. It has worked perfectly for the past 4 years - zero issues. A few of my audio friends have since gone with the same solution and all achieved the same results. Feel free to PM me is you would like to discuss further.
Arnie
Why the secrecy?! Details, please (brand, web site, models, etc.)!