System bottleneck?

I’d like to strongly reiterate that your phone is simply used as a controller of where your wi-fi is coming from (hopefully Qobuz, as it’s the best), and what musical selections are being streamed directly to your streamer.  You are not using Bluetooth and your phone is not involved in any actual streaming except as I described.

ghdprentice AR preamps have always been on my bucket list along with BAT and CJ. I have not give Sonus Faber much thought. Maggie’s get a lot of ink in this forum and seem to be very popular. When choosing my current preamp, I had tried Rogue RP-7 which was very good but I felt the Sachs with the 6sn7 tubes was a little fuller and richer so I have it. When choosing the Legacy’s I went and listened to them at the factory in Springfield IL which is only 60 minutes from my home. I could not imagine any speakers in their price range sounding better. But I am pretty open minded. So I will try to get a listen to the Fabers and an AR preamp together. I have definitely read and heard more about the AR preamps than I have the Sonus Faber speakers. Thanks for your great reviews and input. 
 

anotherbob HEOS does not support Qobuz so I have to use Tidal or Deezer or Amazon Ultimate or Spotify or a couple others. I am currently leanin towards and using Tidal. I suspect I would have to get Roon to use Qobuz in the same way I’m using HEOS for Tidal. I did download and try Qobuz from my phone but that is back to streaming through my phone. Thanks for your input.