Mojo ... I maybe wrong but I believe a CD stores it’s audio as 16 bit samples. There are a bit more than 44K of these numbers a second. I assume that these numbers come off the CD and are stored in a buffer to be reclocked to the D/A.

I imagine that today one would buffer many seconds of audio at a time and go back for more when needed making the transport just a skip free storage device.

Ok, on to jitter ...I doubt jitter on the D/A side of things would really matter that much given a reasonable clock and output filtering. That said, I’m sure you will educate me. Now when one is going the other way, the A/D side of things, jitter will raise your noise floor.