[squeaky-clean]

Most S1 devices but not all of them. Some really old S1 devices aren't supported, I think the most popular one would be the Play:5 Gen1

https://support.sonos.com/s/article/4786?language=en_US

[CharlesW]

Ah! That's annoying, thanks for clarifying.

I love my Arc system as a "point in time" purchase, but I don't have high trust in or loyalty to Sonos in general.