Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
I have a roku hdmi stick and a sonos playbase connected to a Sony tv, playbase is connected to the hdmi ARC connector. I am not able to get surround sound when using tHe streaming services on the Roku. I have a Panasonic DVD player connected and that plays 5.1 SS as does broadcast TV when it is broadcast in 5.1. I can’t seem to get Netflix or Amazon Prime to play 5.1 SS it will only play stereo.
I have the audio settings Audio mode ( Auto (Dolby D)) HDMI ( Auto Detect)
I don't own a Sony TV, but some TV brands will not send 5.1 audio out from an external device. They send 5.1 from their internal sources (broadcast or any Smart TV functions), but anything connected to it by HDMI is only sent out as 2 channel. I can't say if yours is one, but it's possible. Since your BD player will output 5.1, perhaps this isn't it, or perhaps it only works with specific HDMI ports. Try your Stick in the same HDMI port that the BD player is working in, just to eliminate that possible issue.
Dan Roku Stick (3600), Ultra (4640), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.
There are not many streaming services for the Roku that stream with DD5.1. For example both Netflix and Amazon Prime stream in DD+ and AAC stereo. Since the Sony doesn't advertise supporting DD+, the Roku picks the AAC stereo stream.