Of course you can digitize your vinyl. As mentioned above, you need an ADC - analog to digital converter (reverse of a DAC), and then you need the digital input into your mac to be recorded using software. Some turntables come with an USB output which can do this directly, but typically these tables are cheap and I’m not sure if the quality will be good. I can vouch for HRT Dacs having used them before, I am sure their ADC is very good.
