I was set to purchase a Sonos Beam but notice that in the spec that it does not support Dolby Digital Plus or DTS. The latter I could actually live without, because I primary stream content from Netflix and Hulu, which stream using Dolby Digital Plus 5.1 through a roku device. My original thought was that since the beam supports plain Dolby Digital and since Dolby Digital is the core of Dolby Digital Plus, the streaming would be backward compatible. This is not apparently the case, as an experiment, I limited the output of Roku’s HDMI to Dolby Digital and Netflix no longer provide any option for 5.1 sound. It will only activate it if I change the HDMI option in Roku to Dolby Digital Plus.
What this mean is that if I get a Sono Beam + surround, I would only get stereo if I stream Netflix and most other streaming service, because the service stream in Dolby Digital Plus and the roku at least do not extract the Dolby Digital from the plus and the Beam doesn’t do it either.