Thank you, everyone, for your responses today. It has made me really start digging in to a series of improvements that I think can be done. @erik_squires aka "bare wire as God intended" (love that) Thank you for linking your articles, they were very helpful, especially since I was being led to consider power strips as well.
I haven't really focused at all on the power side of the equation, so I have quite a bit of "low hanging fruit", in other words relatively inexpensive improvements that I can definitely make to gauge the incremental sound improvement.
If the improvement is noticeable, I may not stop...sound familiar? 😎