Dedicated AC Lines??

Most large stores have a 30-day no hassle return policy. Try a Monster unit or like, they are in most of the big HT stores. If it does not solve the problem, take it back and nothing is lost except for the gas and time spent.

Hello Lak:
Thanks for your input. I noticed in your photos that you are using isolation transfomers. I imagine this is a crutial part of the system to keep the AC clean. What else can you add about these units? Would replacing my outlets on my current setup make sense as a short term upgrade?
thanks!

Still, no one answered this question:

"I guess I'm wondering if adding a dedicated line would really do anything. All of this 'noise' surely travels back through the breaker and onto the main bus bar in the panel right? Then right back out to all other circuits in the house, including any dedicated line I would add right?"

I've wondered the same thing.

Arch7,
In my opinion good AC outlets do make an improvement in all types of situations, yours included. If I’m incorrect you’re out only about $35 dollars plus shipping per outlet.
Systems I’ve worked on always have improved significantly with dedicated AC lines and circuit breakers, although I’m sure you can find people that will tell you differently in their personal scenario. In your situation, the way you described your set up, I’m sure dedicated lines will make a huge improvement, and should be a first step along with the AC outlet (such as a Porter Port or equivalent).
I can’t explain why there will be an improvement, but I’m confident you will like what you hear. There are others on this site that are qualified to explain the why part, I can’t.
After I added my dedicated AC lines and circuit breakers, the other way I heard another huge improve was with the addition of the Xentech Extreme (5 KVA) isolation transformer. I could live with just the dedicated lines and circuit breakers however I chose not to.
Are there other ways to handle the problem? Sure, some type of power conditioning in conjunction to what you are currently doing, however it’s more of a temporary Band-Aid (in my opinion) then a fix. I’ve tried several products before I installed the dedicated lines and circuit breakers. They did improve the sound however I’m offering for others to learn from my mistakes and take a short cut, including saving some money on their journey to better sound.
New isolation transformers such as a 5 KVA Xentech Extreme are expensive however at times can be found used from an electric contractor or on EBay. The correct isolation transformer can reduce some noise frequencies by (-146 dB). Another good option is a Topaz isolation transformer.
My bottom line is “enjoy the music”.