ARC/Apple Tv Cant use Dolby Atmos?

A TV requires eARC to handle some uncompressed versions of Atmos - I’ve not (yet) seen a TV that will just handle compressed atmos formats, but which are potentially possible over HDMI-ARC - so yes you’re going to need eARC.

However there is a workaround and that’s to use an audio extractor that supports all the Atmos codecs which can be used to bypass the TV for audio purposes - I’m currently aware of two devices that can do this, an HDFury Arcana and a Feintech VAX04101A. See links below:

https://hdfury.com/product/4k-arcana-18gbps/

https://feintech.eu/en/products/feintech-vax04101-hdmi-earc-pass-switch-4x1

Note that such devices will only work for Apps on connected TV peripherals, like the Apple TV 4K, - it won’t work for the TV’s own built-in Apps, which will still play using their current audio formats.

Thanks!

Does anyone have experience with the HDFury?

Thanks. Ordered. S/B here Monday. Will report back. 

Getting ready to setting it up. Do I plug the ARC into the Fury HDMI in the connect to Fury to the TV Earc out to arc in? 

My Apple TV is connected into the TV HDMI 2

Source (Apple TV) goes into the HDMI in on the HD Fury Arcana.  HDMI out on the Arcana goes to HDMI in on the TV.  HDMI-ARC out on the Arcana goes to the HDMI in on the Arc.

So The Sonos ARC stays connected to the TV HDMI(arc) input?

No.  Look at the diagram.  The Sonos Arc is connected to the HD Fury Arcana’s eARC Out port.  The TV is connected to the HD Fury Arcana’s HDMI Out port.  And the Apple TV is connected to the HD Fury Arcana’s HDMI In port.  So the Arcana is taking the input from the Apple TV, stripping off the HDMI-ARC audio and sending it to the Arc, and sending the video to the TV. 

Great. Thank you very much!