Hi....
That was a long post , and I read it in a rush. So sorry if I missed something. If I were in your shoes, I'd keep the denon amp around, and use it as a external amp from the pre-outs of the Yamaha 1070. The Yamaha has 7 channels of amplification. And to go to 5.1.4 Atmos, you need 2 channels of extra amplification which the denon can provide.
I'd also connected the Apple TV via its optical out to the oppo, and then the oppo into the Yamaha via RCA.
If you were listening to mainly music, I would have encouraged to spend good.money on source and amplification. However for movies, all it matters is vocal clarity from the centre speaker and large thuds from the subwoofer. Most of time, it's just the centre channel doing all the lifting, lightly aided by the front L&R. So you don't need to really go to a pre +pro for that room size. Though you have some excellent speakers there. Movie sound tracks except some good English ones just don't deserve that kind of investment.
However if you are still itching for seperates, then both Yamaha and marantz have their pre+pro combinations. The pre processor will get outdated in a few years. But the power amp will always remain timeless. So if you also like, you can keep the Yamaha 1070 and just add a 5 channel power amp to it. Marantz have a 5 channel power amp in the 1.5 lakhs region if I remember right.
That was a long post , and I read it in a rush. So sorry if I missed something. If I were in your shoes, I'd keep the denon amp around, and use it as a external amp from the pre-outs of the Yamaha 1070. The Yamaha has 7 channels of amplification. And to go to 5.1.4 Atmos, you need 2 channels of extra amplification which the denon can provide.
I'd also connected the Apple TV via its optical out to the oppo, and then the oppo into the Yamaha via RCA.
If you were listening to mainly music, I would have encouraged to spend good.money on source and amplification. However for movies, all it matters is vocal clarity from the centre speaker and large thuds from the subwoofer. Most of time, it's just the centre channel doing all the lifting, lightly aided by the front L&R. So you don't need to really go to a pre +pro for that room size. Though you have some excellent speakers there. Movie sound tracks except some good English ones just don't deserve that kind of investment.
However if you are still itching for seperates, then both Yamaha and marantz have their pre+pro combinations. The pre processor will get outdated in a few years. But the power amp will always remain timeless. So if you also like, you can keep the Yamaha 1070 and just add a 5 channel power amp to it. Marantz have a 5 channel power amp in the 1.5 lakhs region if I remember right.