Gentlemen,
Balanced power: been there done that will not go back for a home system. Transformers can be a bigger PITA than most people are will to deal with. They can be a great solution 'in some instances', but are not a cure all. The biggest issue is current limiting.
When Philips Semiconductor closed here in 2002 there were a lot of Topaz Ultra Isolation transformers that went on the surplus market. I bought a couple of the ultra low capacitance 2.5KVA T5's at that time for $75.00 each.
They are not balanced but offer noise suppression > 120dB. My system at the time was comprised of Cary CAD572SE Mk.ii, an over the top modified sLP50-B preamp and a 306 CD player. Even with the fairly constant current draw of the system the onlt time it did not sound compressed was with the transformer feeding an UberBUSS so the PFC network would provide the instantaneous current need during transients. One one think that a 20A supply to class A amps would do the job on amps that drew a total of <450W. Didn't. It weighs 60 pounds and has a weighted noise component of 30dBA at 450Btu/hour. Works great in the crawlspace under the house protecting the flatscreen and related gear. Best surge protection going.
If you want black, velvety dynamics the UberBUSS was created to do that job. This MiniBUSS and DigiBUSS are built for specialized applications at low cost. The Uber is all about heavy lifting in the SQ arena. Charles will have a broken in Uber as well as DigiBUSS for traveling audition next week. After all, I build all things in the power treatment arena, even a surge protector (BUSS-Stop)... even though I am a proponent of whole house panel mount surge protectors. There's something for everyone. If not I'll design/build. All you have to have is time and money.