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[CraigNZ]

I am using my PC and JRiver to listen to Amazon Music Unlimited over HDMI to an Anthem AVM70.  I am currently using the DSP function to encode the datastream (using WDM driver) from Amazon Music to Dolby Digital (AC3) and send that to my AVM70.  This works perfectly, except it is limited to 48Khz sampling rate.  The Audio Path shows JRiver is downsampling the incoming 192khz rate to 48khz.  Dolby D+ supports much higher data rates.  Is it possible to encode the incoming stream to Dolby D+?  The AVM70 does support DD+ and 192khz sampling.

[CraigNZ]

I should add that the PC is running Windows 11 23 H2.

[Awesome Donkey]

The app you're using to listen to Amazon Music has to support exclusive mode for the audio output, otherwise it goes through the system mixer and resampled. If you're using a web browser, there's no way to enable exclusive mode for that - most people use the Tidal or Qobuz apps that do have exclusive mode to accomplish this, not sure about Amazon Music.

Be warned, the WDM driver has an issue when trying to playback 192 kHz content when exclusive mode is enabled, it hiccups and doesn't work correctly. Even if you find a way to get Amazon Music to output 192 kHz without resampling you'll likely run into this issue and there's no workaround for it either, unfortunately.