Even though this has been covered in many other posts… Yes it will.
Any Sonos device with line in is capable of doing what you are asking. The Era 100/300 need the USB C to 3.5mm adapter, that is a separate accessory. Just make sure the turntable either has a built in preamp or you will need an external preamp if it does not.
Thanks for the reply and apologies if this has been covered elsewhere.
@gsmoor
One more important point….
The Era speaker cannot be one that is being used as a surround in a home theater. As such the line-in and Bluetooth options are negated.
BTW…no apologies necessary for posting a question that may have been covered before. It happens all the time. Just glad we could help
The clever thing with Sonos devices is that you can use the Era input as a source for your Ones, but be playing something completely different on the Era itself.
Just a quick point on this, does the USBc to 3.5 need to be the Sonos one? I have an apple one and I can’t seem to get it to play.
A lot of folks pick up an audio/USB converter thinking they are all the same. They aren’t.
The Sonos one takes in Line-Level audio and converts it to the USB input, no clue just what that conversion is on the USB end as I’ve never seen it documented.
Many others take a USB digital audio signal and convert it to Line-Level audio. I have several of these replacing poor PC audio circuitry. Aside form any other issue they convert the WRONG way.
Get the Sonos adapters, get them working. Then try swapping them out for other devices and if you find any that work please let us know which ones, in as much detail as possible.