Outlets and Wire Gauge? - Please help!

@raysmtb1 No need to apologize. My degree is in science. I am all about science but things exist that I cannot explain or measure... When all things seem equal in terms of materials, why do I hear a difference? Why do things change over time? I stopped looking for reasons and have accepted it. I hear it, I accept it. I ask those who have been around these things for a long time. I do not take anything as fact. I rather make note of it for reference and compare them to my experience. I have learned that I can get a pretty good idea of what to expect from asking, and so far it's been a reliable approach. 

One example is with the Fleetwood Sound Deville SQ loudspeakers I just broke-in. The dealer told me to put 150 hours on them, so I tracked play time and and made notes along the way. I would listen to the same two tracks and note my observations. I noticed a huge change around 47 hours. When I was just 3 hours in, I posted my initial impressions and asked other owners for their feedback. The first reply came around 70 hours when one owner wrote, "I noticed the biggest change at 50 hours and only minor improvements continued from there." No, it is not a scientific study, but in this hobby it's good enough for me. Justification from someone I never met who didn't know what I had experienced at 47 hours. 

My goal has never been to debate these things. I am seeking the best possible synergy because late night music is my escape. I want to be drawn into the music. I want the vocalist to be in my room. I want their passion to give me goosebumps. I have this now and don't want to mess it up with this change. I want to do everything right based largely on other's trials and tribulations.

The best part about this thread is only paying $22 for two outlets. Not one salesman or "pinky in the air" person chimed in claiming I need to spend hundreds of dollars on brand XYZ, "or else!"

@jea48 Yes, MC, aluminum jacket with solid CU core.

The electrician has done multiple installs for home theater and dedicated audio rooms. He too has a dedicated room. I was just the first to push for 10awg. He already discussed everything mentioned in the links you provided and within your words. The lines will be about 18" apart. He wrote, "We will be installing 20a Siemens afci/gfci breakers on its own circuit with a dedicated ground. It's the best we can do in terms of noise for that circuit." 

I am committed at this point, so it is what it is. Truly appreciate the time you've taken for me! 

As long as you follow the rules as written by the national electric code all of this other stuff doesn’t make a difference. The engineers that designed the product that you purchased at the store have thought through all of this. Of course you know AC stands for alternating current. For some unknown reason, people fall into the trap of thinking of electricity as if it were water. Some of the metaphors between AC current and water do make sense but many others don’t. Before you hear anything musical, it’s all converted into DC inside the component. Every component does this, that’s the point where everything changes and the engineers have designed the cleanup of the power. If I was an engineer, and I’m not, but if I was, I would want this step in the process to be as effective as possible as to not make my product susceptible to interference. Thus making my design sound less than what it could. You’ve got this process in every component in your system. It’s been cleaned up right before it hits the DC circuitry , that makes the component work. The engineers have left no time for it to get contaminated. If you’re going to think of this as cleaning up the power that’s the place to do it. Right before you drink it and that’s what they’ve done in every product that you have in your system . 
 

I think that these changes that you speak of that happen daily can be attributed to you and not the device. Think about all of the things that change inside of us as living organisms. Depending on how much moisture is in the air affects your sinuses, which are part of your ear, nose, and throat. What about the amount of earwax and location of the earwax that changes from day to day? how about just your general mood? I’m sure if I thought about it I could come up with more. I really believe that there’s more things that alter what we hear because of being human than things that change inside of a wall outlet.