allegro

Amazon Music HD uses Windows mixer in shared mode only. The ability to use Wasapi exclusive mode is absent from the Windows app. Both Tidal and Qobuz have had the ability to use exclusive mode for years. As a result Amazon Music HD is not bit perfect, and even if you are receiving a 24/192 stream it will be down sampled to 24/96 if that is your user setting in Windows sounds. Same for up sampling. I use Tidal and Qobuz and find Amazon Music HD to sound inferior to both. Hard to understand why they did not launch with the ability to use exclusive mode with an external DAC.

If you follow Jason and Mike's posts Schiit has developed their own USB receiver they call Unison USB which is in beta testing now supposedly will be introduced later this year or early 2020, so you would need to send in your Yggy for a new USB board unless you are comfortable replacing it yourself.

I had both Tidal and Qobuz and recently dropped Tidal. No use for MQA and there is plenty of 24/96 and 24/192 content on Qobuz. One downside to Qobuz is they still have a slightly buggy UI while Tidal is trouble free. I sorted that by buying the Audirvana+ player which works just fine with either Tidal or Qobuz and also lets you use VST plugins and upsampling.