Welcome to the forum! As far as I understand DACs (or most of them) only decode up to two channels, so you cannot pass the full Dolby Atmos into one DAC. You could in theory use multiple DACs if you could get the channels separately in the digital realm.
This was better discussed in this topic:
Alternatively, you can look into Surround sound receivers or processors. And you could use the E30 for music listening and change to the internals of the receiver just for movies.