Usb or Optical

Ok i will check that, went on amazon hd and in settings and its set to ultra hd so thats no the problem.

Hey Auxinput you nailed it  awesome thank you that fixed the problem, now on the d300 its showing whats currently playing 24/192 etc.

Let me correct that last statement.  Its showing 24/192 no matter whats playing on the dac screen, so if im playing a 24/96 the screen says 24/192 always, thats strange .  When i click on the song on amazon hd it now says device able to play 192, so at least im getting hi res.

The Windows 7 and Windows 10 sound device system pretty much takes over any audio from an application.  I don't like the way they did this because it over-rides and re-samples/converts the original music data to whatever you set as "default" in the sound control panel.

The Amazon Music app for the PC may not be written to bypass these Windows control panel "Default Format" settings.  Many apps just send the sound file to the internal Windows WMD driver and just let Windows take over and handle the interface with the hardware.  JRiver is one of the few media players that is able to bypass Windows and actually send the music data in original sampling rate (but it mostly only plays files).

Auxinput one of the few who get it that usb or optical directly off motherboards not optimal. If there is one thing I'd like to get across to people it would be this. I find it inexcusable so many servers don't have optimized usb built in. Benjamin at Mojo Audio  was one the few  who understood this with his Deja Vu server, too bad not available any more.

Optical in same boat, only the Small Green Computer Sonicorbiter I9 addresses this.

Expect to spend more money and have more complex setup with most servers since they don't address above issue. One should ask themselves why all these usb renderers, decrapifiers, streamers exist? Because they're doing the job server should be doing.

I'm also curious about these rare dacs with optical input, interesting you prefer usb, at least so far. Is this due to your entire chain or quality of usb vs optical input on dac? I'd bet on usb input being superior as technology has been around much longer and reclockiing etc. SOP these days.