How to improve my system

[DelaneyB]

Hi All,
Thanks a lot for you interesting answers.

To Hifi_Swlon: Indeed, I will keep watching market evolution, no rush, I will continue to enjoy every minutes with my new system as it is for now, already a big step vs my previous system !

To DelaneyB: Thanks for detailed answer, I didn't know that Audirvana+ has now the interface with Qobuz, I will try this from this evening ;-). I am close to giving up with air, it is too painful to establish the connection, will buy a good USB cable and make it as the prefered connection.

To Pim Van Vliet: Very interesting, I also had the feeling that the accoustic of the room is an important topic. I started reading on this, the more I go, the more I believe there is a lot to do in this field.

Thanks to all of you.

Quick update on my post - I've been comparing Mac Mini A+ with USB and optical - using a high quality optical cable the sound is great. I havent tried a hiFi quality USB, but I'm sticking with the optical as that's what I have.