Introducing Port: the versatile streaming stereo upgrade from Sonos. Enjoy streaming music, podcasts, audiobooks, and internet radio on your existing stereo over WiFi with just one simple connection. Control your audio with Sonos app or Apple AirPlay 2, and easily expand your system to more rooms.
I can do this with my Sonos Connect. Pre out from the amp to the RCA line in on the Connect. Works fine, but i don't use it. If i'm going to digitise the vinyl sound, I might as well just play the album on Qobuz.
However, being able to use the Sonos system with my main set up, as a streamer, is very handy and I do that a lot.