My recommendation will be to buy an A-S801 or above of possible. NR series is not integrated amps but receivers.
Also I don’t prefer integrated DACs, so will not prefer those. If it’s important to you 1000 or above won’t be an option.
I have A-S1000. For the sound signature I can tell you this : Good control over bass. Highs are kind of rolled off or soft. So details will be less pronounced. This sure helps with listening fatigue. Maybe a good combo with ESS DACs.
My old Sony 590 ES on the other hand resolves more details at higher end. Sounds very very detailed. But bass and dynamics is relatively weaker.
If you are going with the Yamaha, make sure your speaker have decent tweeter. Something that sparkles reasonably to avoid a dull presentation.