AC Power

The last thing you want to do is get an EE involved. You don't need to be an engineer to listen to music. That being said, there's only one way to handle the situation responsibility. When it comes to power products, you have no idea what will happen when you put something in the system. If you hear a difference, it may not be for the better. All of the recommendations you get here are well meaning and honest, but you just can't rely on someone else's opinion. Give the exact same component to 5 different people and you will get 5 different opinions.

If you live in the US, you should call The Cable Company. They're the biggest high end cable and assessor retailer there is. They keep demo units of everything they sell. So, if you want to buy a new power conditioner, for example, call them and go over your system. They'll make 4 or 5 recommendations and send them to you all at once. Listen to them for a couple of weeks and only make a purchase if you find something that's worth paying for.

One thing I can tell you for certain is you have a fairly complicated system. You're mixing HT and 2 channel, and from a power standpoint, you're going to have some surprises. For example, you may think a new conditioner is going to make a big difference only to find out a power cord for your DVD player does the most good. That's why you have to try everything first.

ghdprentice, what conditioner do you have ?

@carlsbad2 Thanks. OK, you certainly have credibility. I figured you were an engineer by your directness. 😀 I am not a form over function guy, (maybe function & form) but when you truly don’t have the space… I would have a bigger amp IF there were space. I did come in with a set of ideas, but I am never absolute & am changing my plans real time based upon the outstanding input from this thread. So, if you have any other recommendations… please. 
@jea48 I powered down the circuit which includes my system. It includes all electrical in my Bonus Room… all outlets & 4 switches. On the outlet side, the only thing plugged in (aside from my system) is an LED bulb floor lamp, which I generally don’t use. One switch for the ceiling fans, one for the ceiling fan lights. The other 2 are for spots I don’t use.
Of a potentially more problematic nature, the Bonus Room leg on the fuse box includes 2 furnaces, 2 AC’s, 2 refrigerators. Looks like I need dedicated lines wired to the other leg. Thanks!

Given that you watch sports and listen to music, it seems like you enjoy the music but may not be actively and intently focused on listening to it. Even if you were, you may not notice an improvement with the Furman. I notice that if I am watching something on the TV, I focus less on the minute details of the music or audio. What is it you are unhappy with in your current system, or what do you want to improve?

If you try the Furman, keep an open mind about returning it if you don’t notice a difference.  BTW, I am shocked people are insulting your relative.  That says a lot.  

"Your nephew is clueless about electricity but don’t feel bad, most people are."

"Not sure of your credentials, but provably not a good idea to start your comments calling him clueless IMHO. "

I appreciate that you probably like your nephew and don't like him being called "clueless", but when it comes to the effects of power imperfections on sound quality, I don't think they teach that at any engineering school. The fact that you are here asking the questions about power conditioners and dedicated circuits, shows that you know that they matter and he might not be the best source on whether either option is worth it.