Hi folks !
Before installing /e/ on my new tablet, I took a tour of it’s OTB features.
Apart the usual crapy apps, I found Dolby Atmos very impressive (must listen the demo with a Hi-Fi headset !).
Unfortunately, /e/ doesn’t include Dolby Atmos driver, nor app 
Okay, /e/ is not intended to provide this very device-specific thing … but I missed it !
After some researches, I found this : https://forum.xda-developers.com/android/software/mm-p-dolby-digital-plus-arise-20181115-t3868192
Installed with TWRP method, it works fine ! 
Very nice with VLC and some good movies 
Regain your privacy! Adopt /e/ the unGoogled mobile OS and online services