I used a Denon AVR as a prepro for couple of years with no loss of audio quality. I went with a Nord Class D which has switchable RCA and XLR inputs. So the RCA outs on the Denon will not require adapters to use the amp.
4 x Hypex NCore NC252MP 2 Channel Moduleor + Hypex NCore NC250MP 1 Channel ModuleNord Microprocessor 3-12V Trigger with module control and Sequencing Start Up Controller.Nord Switchable RCA-XLR input boardsAuto sensing 100-240V mains input operation0.5W standby operation650W Main PSU on each...
www.nordacoustics.co.uk
They are a classy company with prompt customer service and offer an inexpensive (<$20) option that will pay for your import fees and offer a U.S. service center.
Another option would be to go with the Denon AVR and only buy an external amp for your front 3 (LCR) and then use the AVR’s internal amps for the surrounds and heights. That would save you money you could invest elsewhere.
If you are still set on separates, Anthem may have all the bugs out of its AVM70 with its ARC beta room correction. It will likely test well based on the recent review of their AVR’s bench measurements.