What Bluetooth record players are able to do is transfer this analog signal into a digital signal. It basically digitizes the signal whilst also compressing it. To do this, you need something called an Analog-to-Digital Converter (DAC) which would be included in Bluetooth record players. It would also include a system able to send the signal
To pair a keyboard with your smart TV: Go to the Bluetooth settings of your smart TV and make sure your keyboard is in pairing mode. Look for your keyboard among the list of available devices, and pair it. Follow the prompts that may appear, which may include typing a code to verify the device being paired. 7.Plug in the Port into a power outlet. Connect the Port to a power amplifier or receiver via its RCA Out connections. Open the Sonos app on your smartphone. Select the "Set up a new system" option. Select the "Add" option on your Sonos Port. (If using the Sonos S1 Controller, tap Continue > Set up products.) Follow the steps in the app to set up