Era 300 as rears for Atmos setup - Confusion and Sonos is part of it : r/ sonos
Sonos Era 300 Review: The Ultimate Dolby Atmos Speaker?
Sonos Era 300 as rears to the Sonos Arc – superb Dolby Atmos 7.1.4 (review) - Cybershack
Sonos Ray Noir - Barre de son - Cobra.fr
Sonos | Beam Gen2, barre de son TV et musique, Wi-Fi multiroom, HDMI eARC Imput, Dolby Atmos, AirPlay2, Google Assistance et Amazon Alexa : Amazon.fr: High-Tech