Integrated suggestions

Current owner of both Hegel H390 and 590. One is going down the road. Both are fantastic and in your price range. Short list of replacements I plan on trying include Modwright 225, LTA Z40, Jeff Rowland continum, Gato. Currently switching between Magnepan.7 and Harbeth super HL5. Really happy with what I’ve got, but still have an itch I need to scratch. 

+1 for either the Coda CSiB or the Krell 300i.  I have had both and both are outstanding integrated amps. Which you would prefer would be personal preference.  Also has the Primaluma Evo 400 integrated, really nice but not quite the same level as the Coda or Krell.  CSiB had a great Pre using the XLR outs.  Great buy if you can find one used. 

"Sugden, Moonriver or Hegel depending on your room and speakers." 

As someone mentioned, the Moonriver doesn't have an XLR input.  Neither does the Sugden (at least the A21 series).  I would consider the Norma IPA140, made in Italy, to very high standards.

I just traded in my Esoteric F-07 for the new Michi x3, Series 2 that includes their new 8-Channel ESS SABRE ES9028PRO DAC (you can still use an external DAC).

I have had several previous integrated SS (Musical Fidelity, Rotel, McIntosh hybrid), Class D (Primare), and Tube amps (Prima Luna, Modwright, Cary) and this by far has been the best sounding paired with my B&W 805s.  The bass is so much more prevalent that I no longer use my REL sub.
 

Build solid, almost Apple like in its appearance and packaging, and seems to weigh more than its 64 lbs.  Pricing is about $5,700 which I would say is under priced compared to integrates of similar quality and specs.

Infection,

Some models from Wilsenton, Pathos, and Prima Luna would fit your needs. However I have not personal usage in my system, so going off of reputation and specs alone