Perspective system advise needed.

Thank you, mapman. I thought to make this my "end game" and wondered how long those components and speakers would last. I am 66 y.o. 

Thanks, roxy54. I am a non-native speaker, and in my native language, there is one letter for one sound. Russians joke that when brits write: Manchester, they read: Liverpool. Jokes aside, I wondered whether you could provide me with expert advice on the matter in my original post. I am sure you'll write it in English - the language you so well mastered and, perhaps, the only one you speak, aren't you?

Thanks, djones51. I was not aware that Genelecs have a built-in DAC. Although those KEFs do. You see, I strive to get the great sounding system for less. Still, my impression of a Terminator II and Terminator Plus is that these would give me a much more refined and life-like sound compared to the built-in DAC in my NODE streamer or most of the wireless speakers you have mentioned. Yes, I have read that D&D are great speakers, on par with the Genelec 8361B, and I may also consider them, even though they are more expensive.

Thank you, holmz.

Minimalism in audio (or Future-fi as some call it) makes much more sense than all those twenty-century creations, like preamps and multi-thousand dollars worth of room treatments.

Thank you, russ69. A long time ago, I subscribed to this notion of future-fi or minimalistic audiophilia philosophy that your music could come from modern equipment, which does not necessarily have to be complicated to be great. For instance, many people report that room treatment was the most critical component in their setup. In contrast, others answer that great software like Dirac or Genelec's GLM could achieve the same (or almost the same) result with much less money spent.

Thank you much, baylinor.
I appreciate your kind and wise words. It's good to see that this board has grown-ups.

Thank you very much, overthemoon!

Something to look into, for sure! I Will do just that.

Thanks, again.