How do you choose the best turntable for the system? Pro-ject wants to make stereo separates easier to ... but there’s also another RCA input, an optical port, and a Bluetooth 5.0 connection ...

designed it to wire an RCA Victor "phonograph" turntable to the radio to amplify the sound. Only one cable was used as it carried a monophonic signal, not stereo. See A/V ports and phone connector.