Denon, big product name, hmmmmm
Unless you stick with affordable, simple items from the well-known Chinese brands, I personally would spend that €2000 differently.
You have said above that you don't have a lot of experience with audio kit - I think using a miniDSP will be a burden for you and for your budget - it's a significant chunk just to get 'room correction' and/or driving two subs. We've mentioned than ANY device that has stereo line-level signals coming out of it can be used to drive two (stereo) subs, as they all have adjustable gain and crossover points. Unless I have missed it, I don't recall you saying your room is problematic to the point of needing Dirac-anything. But if you know this needed, fair enough. People get good results.
I have a very modest system which at the time was bought for under €3000
including speakers and two subs, and honestly, with careful positioning, I'm very happy with the sound, ease of use, etc. You may say I'm lucky that my room needs no correcting devices, but then I like things simple. I have many thousands of FLAC tracks of many styles, and it all sounds sweet enough to me (and I'm not required to sit in one 'optimized' place in the room!)
Therefore, for your budget, I'd look at a good value DAC/streamer, and a nice power amp. If you wanted to keep things
really simple, and look at an all-in-one (just add speakers and 2 subs) - the Denon suggestion was just that, I think. Even better
for you might be (it works fine with stereo subs on the pre-amp ports):
Just a suggestion; Hypex based, and the price reflects it being a run-out model - no doubt I'll be flamed for not being an audiophile!