Need Direction...

Look for a phono stage with USB digital output for direct capture by sound software on your Mac. Or look for a USB audio interface with stereo analog inputs, and connect your phono stage line-level analog outputs to the audio interface.

@stringreen sounds like you can use an AES/EBU connection from the phono stage XLR digital output to a USB audio interface that accepts AES/EBU digital input, if you want to use the phono stage's built in ADC.