I know the Sonos Port is one option, but are there any other ways to make this work?
Any Sonos with an analog input will work.
https://support.sonos.com/en-us/article/use-line-in-on-sonos
Have a look out got a refurbished ERA100. Probably the cheapest option.
Keep in mind you will need the analog input device/adaptor to use either of the Eras.
FYI., If you have Era 100’s or Era 300’s used as surrounds you cannot use them to connect a turntable. When used as surrounds the Line-in and Bluetooth options are not available.
This is true of any Sonos device that is used as a surround ‘driver’. It’s the act of making it do surround duty that disables any other input.
The Line-in on Sonos AMP when used to power wired speakers as surrounds is deactivated as well.
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