Lossless is here. Included in Spotify Premium

​@Brooks Perry If you can, I’d certainly recommend that you ‘edit’ your post to remove both serial numbers (which can be used to gather discounts) and IP addresses (which might be used for hacking purposes). 

Hi ​@Brooks Perry 

Yes, your speakers are compatible with Spotify Lossless.

To reboot everything, the best way to go about it is to turn off (or unplug) your router and all your speakers. Once the router has a been off for at least 30 seconds, turn it back on and wait for Wi-Fi to return before turning on the speakers, turning the Playbar on before the surrounds or Sub. Reboot the phone at roughly the same time - so it reconnects to the rebooted router. I wouldn’t even open the Sonos or Spotify apps until a minute after the last speaker has stopped flashing its white light.

I hope this helps.

I’d check that your partner’s Spotify account, which is the account linked to Sonos, has Lossless enabled.

​@Corry P 

I completed a reboot of my wifi router, all Sonos devices, my iPhone, my MacBook Pro, and her iPad.

Her iPhone is not at the house right now, but I reinstalled Spotify on her iPad and updated the wifi stream quality setting to Lossless on that device. I’ll update Spotify stream quality settings on her iPhone when she gets home.
 

Everything is now reconnected and the issue persists… no luck. I will try contacting Sonos Tech Support.
 

I have been unable to get ahold of anyone helpful at Spotify so far.

​@Corry P 

Also, I tested the functionality from the freshly reinstalled Spotify app on her iPad after the reboot and reproduced the same issue with her device and Spotify account. So it’s not specific to the account. 

Hi ​@Brooks Perry 

That’s quite unusual - I hope the team can figure it out for you.

Can I just check you’ve done it all?

Airplay a track from Spotify on iPhone or iPad to a Sonos speaker (using the same Spotify account that is used on your Sonos app), and while playing music, go to your name on the Spotify app (top left), select Settings and Privacy, then Media Quality, and ensure “Audio Streaming quality” is set to Lossless. Give it a minute, then stop Airplay streaming to the speaker. 

Go to the Sonos app and remove Spotify. Then re-add it (ensuring the same account as you had just Airplayed from), and start playing music. It should then stream in Lossless. Sometimes to see the Lossless tag, you might need to drag the elapsed time slider towards the end of the song, and then back again to get the tag to appear. A quirk of Sonos. 

AirPlay a track from Spotify? You mean play a track to Sonos via Spotify Connect?

Yes, same thing but I don’t want to assume anyone knows what Spotify Connect is. It’s not intuitive.

You can also select to AirPlay from Spotify app in the speaker connection options. It does say Airplay > Lossless in the Spotify app when connected to Sonos, with Sonos app just evidencing Airplay.

Not to make to fine a point of this but AirPlay and Spotify Connect are totally different things. AirPlay streams music from an iPhone only (Android does not do AirPlay) to your speaker, while Spotify Connect makes the speaker fetch a direct link to Spotify - that on Sonos will not even be broken when the phone that was used to for Spotify Connect leaves your WiFi.