Two Era 300s make more immersive rear-channel speakers.
If you already have an Arc or Arc Ultra soundbar and want to create the best Sonos home theater system possible, you’ll want to get two Era 300s and dedicate them as rear-channel speakers. Each speaker has an upward-firing driver that can better take advantage of the Dolby Atmos movies, shows and other content that is widely available.
The Era 300 is a smart speaker.
The Era 300 is a smart speaker that can respond to voice commands via Amazon Alexa or Sonos Voice Control. Unlike Sonos’s previous smart speakers, the Era 300 (as well as the Era 100) does not support Google Assistant.
The Era 300 supports Bluetooth.
Bluetooth means anybody can play audio on the Era 300 — just push the Bluetooth button on the top-back of the speaker and pair on your smartphone — without you having to share your Wi-Fi password. It enables you to stream content that’s not from a music streaming service, like the audio from a YouTube video or an original recording you have saved on your smartphone.
The Era 300 is the better speaker for Android users.
The Era 300 (and Era 100) is the first Sonos speaker that supports TruePlay for Android, which has been a feature previously only supported for iPhone and iPad users. (Sonos’s Arc Ultra soundbar also supports this.)
The Era 300 can use its built-in microphones to calibrate its sound for its space. It’s not entirely as accurate as TruePlay for Apple users — which uses the built-in microphones of the iPhone or iPad and requires you to wave/walk the devices around the room — but it’s the best solution for Android that Sonos has ever offered.