soix- Thanks for the suggestion. I read diligently about benefits of doing as you indicate, and I 'thought' I understood that pretty much across the board, wireless was sonically equivalent to the best wired connection. Glad to know otherwise. And it's not difficult for me to try.
I do have the ASUS Zen Mesh System with 2 Mesh nodes (extenders), in addition to the ASUS router. One of the mesh nodes is in the same room as the hi-fi system, and it would be easy enough for me to move it near the Node N130 and connect via Ethernet cable. Aesthetically, it's not as elegant for me, and that's why I didn't give it more consideration when I did my research. That's still much easier than running Ethernet in my attic and attempting to fish down masonry walls from my modem to my Bluesound Node. A couple questions for you:
1. Do you have a particular Ethernet cable you like? My default would probably be DH Labs or Triode Wire Labs, but I would like to know if you have a favorite.
2. I really hope to avoid yet another rabbit hole, but I seem to recall reading these Mesh Nodes (extenders) benefit from their own Linear Power Supply.
3. If No.2 above is true, what about another LPS for the Modem? And what about yet another LPS for the Mesh router feeding signal to the Mesh node extender?
4. Depending upon the answers to these, I might just reconsider the attic work, as it's probably less hassle and more elegant to bite that bullet.
These are questions I had some months ago but thought I had satisfied myself not to bother with them. I will be glad to hear some real experience talking. Thanks for any further thoughts.