Hi @Abdoulamzah 
No - the Era-300’s are not able to ‘bond’ to a Beam (gen1) for Home Theatre use. You would need to use the Beam (gen2), or a Sonos Arc instead.

Thank you, and the sub mini, with beam g2 and 2 eras 300 ? 

Now I have Sonos arc with my 2 eras 300, can I add my 2 ones SL? 

Not to the same ‘room’ in the Sonos software, the maximum speakers is one sound bar, two surrounds, and up to two Subs (but not Sub Minis). 

Any TV input would be delayed in the second ‘room’ by at least 75ms, but any music streamed to both rooms would be in sync. 

Thank you. Last question, I have a SHANLING Q1 DAP, it have a usb-c sound out option, (I can choose between jack or usb-c)!can I plug it directly to my era 300 ? 

I wouldn’t think so, no, but it might be worth testing. 

Hi and thank you. Can I listen in dolby atmos with quality sets to uncompressed only?