Sonos Era 100 White Duo Pack

I am impressed with the audio! If playback via Bluetooth is a big plus for you, be sure to read the following before you buy this speaker!

I bought this speaker a week after its release in the Netherlands. And have had it for two weeks now. I already have one Sonos Five at home. My goal was not only to enjoy music more (via Deezer app, goes via Bluetooth), also to play Netflix via Bluetooth on my laptop, so that I no longer need a line audio cable, which sometimes wants to disturb if you move (I don't have a TV). I want to send Netflix audio and music to the Sonos Era 100 via Bluetooth, and have it forwarded through my Sonos system. Unfortunately, I encountered a major downer in this.

• Every time I play content I have to group the two speakers in the app. Often the speakers ungroup very randomly, without my command to do so. Then the audio will only play on one speaker. I have to grab my phone, open the Sonos app and group the two speakers together again. Or shout via Sonos Voice control: Hey Sonos, group everywhere!
• After about an hour of playback via Bluetooth, I hear an echo, the audio between the Era 100 and Sonos Five is no longer in sync. This can only be solved by stopping the audio, ungrouping the two speakers and restarting everything. And hopefully it will work again for a while. Not always.

Sonos support says the following about these two issues: Echo in my setup: "Okay, I just checked here and that's not a supported setup. If you're going to use the speakers like that, it could cause lag or other issues, like that echo. It should work better if you groups speakers over Wi-Fi and not over Bluetooth." --> unfortunately not possible for me when playing Netflix on laptop.

Grouping again and again: "I see that one of your speakers connects to WiFi channel 11 and the other connects to WiFi channel 44. You could contact your internet provider to ask if they can assign a fixed WiFi channel to your router ( 1, 6 or 11)." --> Channel 1, 6 and 11 belong to the 2.4GHz network. Channel 44 belongs to the 5GHz network. So I would have to split my network OR somehow get the Sonos Era 100 on the 2.4GHz network. I am currently looking for a solution to this.

I'll keep the Sonos Era 100, because it's nice sound, but I came home from a rude awakening when I encountered these Bluetooth problems. Good to know for your purchase!