Qobuz & Sublime Pro ?

[streamy]

My problem is not a purchased and downloaded high-res file, that´s easy and clear.

My problem is streaming high-res files:

I thought that it is safe to get high-res streaming files using my Phantoms (and may Dialog) with SPARK and Qobuz. If I understand you right, you have doubts about this.

Connecting an OS device directly optical to my Phantoms is no option for me.

I will ask Devialet...

I fully understand you. Devialet is the only one that can give you the answer on how Qobuz is streaming to the Phantoms when Hires is selected in the streaming options. Nothing is directly visible in the app and Hires could be limited to 24/96 as it is the case on the new Dialog, at least for me. In earlier DOS versions, more than 1 year ago, I can recall that 24/192 used to work or maybe it was with the old Dialog that I replaced to get Airplay. Acoustically, it is very difficult at least for me, to clearly distinguish between red book and hires.
I could check for you if there are longer latencies (before the stream starts to play) or even drop-outs when I select Hires and stream from Qobuz a 24/192k album in Spark. This could indicate that the streamed data is much larger. But of course it would also be a bad sign regarding the implementation. Another idea could be to measure the time it takes to fill the buffer. This can be observed in Spark and in theory should take longer when 192k track is loaded compared to a 44k track.