Hi ​@MartySim 

Welcome to the Sonos Community!

There is no simple way to connect a turntable to a Sonos One, but there are ways to do it, and cheaper ways to do it.

So, if you already have a turntable and it has Bluetooth, then the cheapest way to get it playing on your speakers would be to purchase a Roam 2, connect the two via Bluetooth and then group-in whichever Ones you want to play too. Roam 2 must play to have the others play.

If you have a turntable that does not have Bluetooth, then purchasing a Era 100 plus a line-in adaptor would be the way to go - connect the turntable to the speaker via cable and adaptor, and Line-In will show as a source for any room in the Sonos app. The Era 100 does not have to play for other speakers to be able to play, but it can join in.

And if you don’t already have a turntable, we have a selection from Pro-Ject available on our website (scroll to the bottom).

I hope this helps.

Edit: Era 100 also supports Bluetooth, but line-in is preferable.