Hi i think the sony dh790 has an issue perhaps firmware issue with DD+ over streaming (sky, netflix, prime.) which Sony need to address and fix. The last firmware this AVR had was in 2018 which is ridiculous.
If you set the AVR to Multi/AFD/DSUR you will see DD+ is not being detected on the input signal.
If you change to Direct you can see DD+ on the display screen but height channels are greyed out. If you change to Nueral-X the info button and display shows DD+.
Blurays work fine and detects Atmos with True-HD with no problems at all.
Therefore this issue affects anything streaming over DD+ and does not work on Multi/AFD or DSUR. The display just shows Dolby Surround.
I checked with other users of the DN1080 model and they see DD+ on the display for AFD therefore this issue is on the DH790.
