Responses from zlone

Furman Elite 20 PFi - Hummmmm
Thanks Erik, just the man I wanted to hear from. I have on of these  https://emotiva.com/products/cmx2  laying around, I will put it before the Forman and see if it cleans up the hum from potential DC. Will also test the neutral/ground.   
Bananas rule, spades drool. End of discussion.
I agree with Erik having found a loose spade or two. I will second locking bananas as the best solution and one that I believe bumps up the surface area in contact with the speaker. The spade issue has always stuck me as something fairly easy to f... 
KEF Reference 1s v LS50 Metas
Got it. Keep the References. You can always buy a new pair of LS50’s if you experience regret, Refs are a bigger loss.   
help! no sound
Based on the setup, I assume your speakers are active/powered. The most likely thing to fail in this scenario is the tube. Turn off the power and remove the tube, power up and try again, the Lyr will the switch to solid state according to the site... 
KEF Reference 1s v LS50 Metas
Having just upgraded from the original LS50's to the Reference 1 (non-meta), the answer is easy, go with the Reference if it is in your budget.  Some caveats, the Reference need more space than the LS50, so if you are in a very small room, the LS... 
Cable Break In for the Naysayers
I have tried several sets of speaker cables in my system, and with few exceptions, they all sound different after some usage. My expectation bias always leans towards revelatory, and my hopes are generally dashed out of the gate and I must wait fo... 
Some Cables Thoughts
Good move!  
Confused with size of speaker to get when placed along long wall in large room
Shooting from the hip here, but you may want to check out Larsen.  https://www.larsenhifi.com/en/larsen9.htm    
Streaming upgrade from Cambridge Audio cxn v2
+1 on getting separates.  
Some Cables Thoughts
Nice system. I used a pair of Kimber 8TC’s with my Coda amp and KEF speakers, meh. I am going to start sounding like @soix , but he recommended these for me and they were transformational: https://www.audiogon.com/listings/lisb4fbe-acoustic-zen... 
Sub $2,000 Integrated Amp Recommendations
Some good choices on your list. I had the M3si briefly and liked it, but it did not enough power for my speakers. Take a look at NAD as well. You might want to aim higher and troll the used market for a while, some great deals to be had on lightl... 
Do You Buy Speakers Without Hearing Them?
Just did. I bought some KEF Reference 1’s used, without hearing them. These were preceded by LS50’s, so I figured it was low risk. An excellent upgrade.   
Cream — Stormy Monday
@stuartk my favorite track from those shows as well. Something special happens on that one.   
New streamer
@audphile1 That is very helpful, thanks. My DAC is due for replacement as well, but trying to spread things out a bit.  
New streamer
@audphile1 Very clear, thanks for the explanation. It now makes sense why they do not include SPDIF in the lower models, do it right, or not at all.