SONOS DOLBY ATMOS TV
Keep in mind that both the Apple TV 4K, and the Xbox One X are getting the same content from Netflix, Disney+, Amazon, Vudu, etc, and that content is all encoded in DD+ lossly Dolby Atmos, the only exception is that the Xbox One X can play 4K Ultra HD Blu-Ray movies and output in lossless Dolby TrueHD assuming you have an TV that supports eARC, or lossly DD+ if you don't. The same goes for the XBOX One X, as it also outputs in Dolby Mat 2.0 for Dolby Atmos. If you have eARC you are 100% golden and have nothing to worry about. What that should mean is if you have a TV that supports HDMI ARC Dolby Digital Plus, you should get Dolby Atmos passthrough to your Sonos Arc. From what I understand about the way tvOS outputs Dolby MAT 2.0 on the AppleTV 4K is that it can basically detect what it is connected to and has a lossless or lossy track inside it. The Apple TV 4K outputs in Dolby MAT 2.0, not to be confused with Dolby MAT. Now I keep seeing lots of questions about the Apple TV 4K.
Keep in mind, that any blu-ray disc that has a Dolby TrueHD track will ALSO have a DD+ Dolby Atmos audio track as a backup, and the blu-ray player + tv + sound bar will typically figure out what is the best format that the equipment can support assuming you have it hooked up and setup correctly.
SONOS DOLBY ATMOS MOVIE
If you are looking to play a movie via a 4K Ultra HD blu-ray player and want LOSSLESS Dolby TrueHD Dolby Atmos audio then yes you would need a TV that supports eARC, typically a TV that has HDMI 2.1, or a higher end 2019 TV that has eARC.
SONOS DOLBY ATMOS PLUS
From what I can tell, if your TV supports Dolby Digital Plus and has built in Dolby Atmos apps, you should be good to go. If it says Dolby Digital Plus, it MIGHT pass Dolby Atmos, again only the lossly version, but until more TV's are tested, we will not know for sure what ones will and what ones will not. When looking at TV specs you will notice that some only support Dolby Digital passthrough, if it says that, then it will NOT support Dolby Atmos at all. This is also why many TV's that have support for Dolby Atmos via built in streaming apps, DO NOT have eARC, that is because they are using DD+ for Dolby Atmos, again they are using lossly compressed audio.Īnother point to note is that some TV's that DO NOT have support for built in Dolby Atmos streaming APPS, but DO have support for Dolby Digital Plus Passthrough (not Dolby Digital) may still pass through Dolby Atmos from other devices, again the keyword here is MIGHT. If you are using a streaming media service, Netflix, Amazon, Vudo, Disney+, or Renting/Buying movies from iTunes, all of those things are all compressed in DD+ (lossly) Dolby Atmos, they are NOT using LOSSLESS (Dolby TrueHD) Dolby Atmos, and this is why eARC doesn't matter. The big difference is that this Dolby Atmos is LOSSY (compressed) audio.
Some (keyword SOME) TV's, typically those from 2017+ and beyond, can also PASS THROUGH Dolby Atmos via Dolby Digital Plus (DD+) via stand HDMI ARC. To be clear, eARC is required for LOSSLESS (uncompressed audio) Dolby Atmos (example: Dolby TrueHD) eARC is NOT required to have Dolby Atmos, as many posts keep suggesting. Can you get Dolby Atmos on HDMI eARC? Yes.Ĭan you get Dolby Atmos on HDMI ARC? Yes.
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