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After nearly a year of ownership on our Arc SL we’ve decided to get a new TV. I’m looking at the Vizio M65. According to their site, the display has HDMI 2.1, but according to some reviews its really only HDMI 2.0b or something like that. From a previous discussion I believe someone said that on HDMI 2.0 you can get Atmos but its only Dolby Digital Plus, not True HD, so its compressed. Is this true? Or will True HD Atmos play through eARC on HDMI 2.0?

 

Also, I’ve read elsewhere that the Apple TV 4k (5th or current generation) will not support True HD Atmos, only compressed DD+, regardless of the HDMI connection. Is this true?

HDMI 1.3 and higher supports lossless audio codecs like Dolby TrueHD and DTS-HD Master Audio.

If you want to get lossless Dolby TrueHD/Dolby Atmos to play out of the Arc, you need a TV with HDMI eARC. 

Streaming apps don’t use Dolby TrueHD/Atmos as it requires too much bandwidth to stream. That’s why they use Dolby Digital Plus/Atmos instead.

The Apple TV 4K supports Dolby MAT which also requires a TV with HDMI eARC. Rather than playing Dolby Digital Plus, the Apple TV will play the audio as multichannel PCM.

Thank you. 

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