The Sonos Era speaker is an addition to your multi-room system or your surround sound setup. You can easily connect the Sonos Era to other Sonos speakers, so you can quickly place it in your multi-room system. So you can listen to music in every room of your house. You can also use the speaker as rear speakers for with your Sonos soundbar. So you can hear sound from all corners of the room and you're in the middle of the movie. The Sonos Era 300 has Dolby Atmos. This ensures that sound doesn't only come from the front, but reflects via the side and the ceiling. This ensures a spatial audio.