Usb or Optical

Try going to "Advanced" tab in your sound configuration in Control Panel and setting the Default Format to "2 channel, 24 bit, 192000 Hz (Studio Quality)".  Then try playing a youtube video and see if the DAC is receiving 24/192.  Alternatively, you can choose another default such as 24/96.  If this works, it could be a limitation of the Amazon player software.

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).