DTS X ?

So I suppose that Kody transcodes DTS to Dolby Digital (AC3) without losing chanels.

And seems Plex can do the same.

Wake up Sonos. Why don’t you support this? You sure charge enough!

Sonos doesn't support not only DTS family codecs but support of Dolby codecs are also far from good. For example Dolby TrueHD is also not supported.

Dolby TrueHD is supported on the Arc.  However, you do need to have an HDMI eARC connection, as ARC is not capable of transmitting TrueHD.

Sorry forgot to add that I was talking about Beam.

Yes, correct on that front.  The Beam doesn’t even support Dolby Digital Plus, for that matter, even though DD+ can be transmitted over ARC.  The Beam actually supports the same codecs as the playbar and playbase.

And I suppose will never support. Because Beam connects via just ARC, not eARC.

ARC can handled DD+.   Indeed, I can do DD+ on the Arc through my ARC capable TV.     That said, I don’t know that Sonos considers adding DD+ to the Beam to be much of a priority, since the biggest difference between DD 5.1 and DD+ is Atmos, and the Beam can’t do Atmos content.  The Beam is designed for small/medium sized rooms, where most DD5.1 is really all you need, assuming you’re streaming content only.

Is dts x better than Atmos? I can't understand this fascination with dts codecs, the market leader is Dolby 

@Naekyr 
It is the same concept, where two different companies implement it in their own way.

But Sonos is yet to provide us with any DTS support, which is a shame.