Both models are only 5.1CH AVRs so of course would not feature Dolby Atmos or it's accompanying simulator Dolby Surround.
The fact that it does not support atmos is no problem for me, but the lack of Dolby Surround seems to be of importance since ill use it mainly for watching movies and music."Does not have many built-in decoders. It does not support Dolby atmos, Dolby surround, etc. Again, you will have some troubles with it."
The Dolby Surround upmixer (ie. DSU) accompanies the Dolby Atmos decoder (on models that feature it) and simulates audio to any additional speakers in one's setup.So if i understand you correctly, Dolby surround is a simulator of a 7.1 setup? and since i only use 5.1 setup, this does not matter at all?
Kind regards,
Mathijs