@mesch, thanks. All that is correct except I may prefer a tower that wouldn't overpower the room *too much (ha ha) (instead of bookshelf. monitors). My thought Is that being in an apartment a subwoofrr to augment bookshelves may irritate the neighbors. I'd rather have a quality tower and sacrifice some extreme low end, but also, some monitors might suprise me even without a sub. I currently have an external old Parasound zdac, but it's not much better than the one in the node 2i.
@Kota1 suggested getting room correction via the martin logan unison streamer. I could sell my Node and get the other streamer that includes ARC. Previous speakers were revel f208 and salk songtower. Revel overpowered the room wit 2 8" woofers per side, and songtower had great clarity and low end extension but sounded to bright and forward on certain songs, but mostly, those drivers were too small for punchy midbass on rock and stuff like Jack white, NIN, etc.
The current system is "great for the price" and I believe I'll have to spend a lot more than i paid to noticeably exceed how it works in my room. It's cheap but it works. Yamaha A-S500 integrated with node 2i. Parasound zdac. Cheap Bluejean and wire world cables with Acoustic Energy Aegis 3 speakers is what I currently have.
I had Robert Hartley's book. Loaned it to a buddy of mine and never got it back in spite of repeatedly asking for it. (I hate loaning stuff. I gotta stop that).