Thank you all very much for your contribution.
I don't have any extraordinary type of hearing but I do think I have good ears. Perhaps I hear a little bit better than the average person (I am not that old anyway, 41 years old). For instance, I can hear the difference between mp3s 160kbps and 192kbps even through some small computer speakers, while I know many people who can't. The difference between 128kbps and 160 kbps mp3s is more than obvious to me, still there are people who can't tell the difference. To be honest at bit rates above 192kbps I can't really pick up much difference at least not through an average sound system.
Another example comes from my experience during audition when I was about to purchase my current speakers. The Klipsch I now have as a matter of fact were not at the top of my list. I was considering to buy some more expensive and better looking German Canton speakers which had excellent reviews. During audition at a store in a special isolated auditorium room comparing different speakers side by side in the same conditions, powered by the same amplifier, it was clear to my ears that the Klipsch had some advantage, very marginal though but it was there. I could simply hear more details in the sound at some specific instruments and frequencies compared to other speakers. I immediately changed my mind and ended up with the Klipsch Reference Premiere.
That's mainly the reason why I insist on sound fidelity. If there is any difference on how the one AV receiver sounds over the other and if the DAC plays any role on that, I want to know it, no matter if this difference is very small. If there is practically no difference unless you have super powers, then I will choose my next receiver based only on the features and price.
For the time being I lean towards the Marantz 6013 mostly because of the better pricing on German market pus the good reputation. However, I like a lot the look of the Yamaha Aventage models and I am still curious about the overall user experience they give compared to D&M. I do plan to use in my new setup 2 proper ceiling speakers for the Atmos (not firing up Atmos speakers),probably from the Klipsch in-ceiling Reference series. I do not see much chance for additional 2 Atmos at the back though.
Some more questions:
- Is the parametric EQ on the Yamaha similar to the one from Audyssey via an app? Is it better/worse?
- How MusicCast works exactly. Is it only for streaming music from the receiver to wireless speakers or you can also for stream music from wireless devices towards the AV receiver like AirPlay?
I generally like AirPlay basically because it is very convenient and is supported by many devices, mobile phones, iPads, Mac computers etc. The downside is you cannot stream high resolution FLAC audio files, they are automatically down-sampled. Is MusicCast better in that way? Anyway, I do not care much about AirPlay on the receiver, I have Apple TV 4K for AirPlay.
Thanks.