Hi @sunnysokol
Welcome to the Sonos Community!
If you can’t connect a turntable to an Amp directly, then the next cheapest option would be to purchase an Era 100 speaker and a Sonos Adaptor to provide Line-In. Connect your turntable to it, and it can share the feed to any other Sonos devices.
If the turntable does not have a built-in pre-amp, then you will need to fit one between the turntable and the speaker.
I hope this helps.
"Common sense is the collection of prejudices acquired by age eighteen." - Albert Einstein