Amazon HD/UHD on HD Dac.

Hi all,
I have just noticed that there is reference to Amazon HD/UHD music in the interface.
If you select “Amazon Music” then scroll down there is a “settings” tab.
When selected a check box shows that you can select HD/UHD.
I have tried this and all it seems to do it to then skip every track and play nothing.
I am subscribed to Amazon correctly. Does anyone have this working or know what it is meant to do?
Again…an up to date F/W log would be very helpful indeed.


I checked after the Update to 4.6.509530 that occurred today and its still the sameffect as your seeing only picks up Amazon Music but Not Amazon UHD Music