The Emperor Has No Clothes!!

@mdalton You definitely [accidentally😀 ] struck a nerve even without naming names.  I'm in your camp on digital as far as server/streamers/switches not imparting a sound of their own although my Pandora Dac is quite distinguishable from my Mytek Dac which i suppose could be tubes v SS.  As for that wall of glass behind your speakers i can see why you don't want to cover that view; however, i have a similar setup with a giant window behind my speakers--the system still sounds good with the window exposed so i'm guessing that wall doesn't influence as much as if the glass were on the side(s) or behind the listening position, but i finally broke down and installed a curtain rod with mechanized drape to cover that window. The difference was quite noticeable and an improvement--sound is fine without it when i want the view (mine's not nearly as nice as yours) but at night i always cover that window and the sound is better--just a thought...

Oh--also meant to say that everything sounds better with single malt...

@wyoboy 

Single malt is definitely the best room treatment in my experience.  Re windows, yes, I know there’s a lot of dogma out there on this, but my experience with my room has been very positive.  There’s a youtuber called “Acoustics Insider” I’ve recently run across who provided a potential explanation why, based on absorption rates of different materials.  (Bottom line:  at lower frequencies, not much difference between glass and drywall; at higher frequencies, bigger differences, but since high frequency is more directional, glass behind speakers doesn’t matter as much.) YMMV, of course.

I think that's what i found--the drape doesn't affect low F but it does help cool off the highs just a bit

Not that the highs were "hot" to begin with but to me the dampened highs sound better YMMV