Take a source. Make recordings of the source in different formats. Compare.
Now, what is relevant to that in your quote?
Given the age of most of the stuff I am likely to digitise, digital master tapes don't even come into it.
Frankly, although it is heresy in the eyes of the real vinyl fans on this forum, given a free choice, I probably would go out and buy the CD, but that is another story altogether. I have the albums on the shelf: where they are in reasonable condition, I'd rather not pay the record companies yet again for the same stuff and, although I have limited digitalising stamina, it is an interesting technical exercise, which involves a certain amount of getting to grips with the music in a different way. My deck didn't cost lakhs (and is about 20 years old), nor did my phone preamp, and my sound card was only about 14,000, not 1,40,000 --- but still, the results are comparing like with like.
I guess I'm stuck with stereo for the rest of my days. I mentioned elsewhere that I hope to be able to afford to replace equipment as it dies, but upgrading or moving to something like a new multichanel set up is most unlikely. The possibilities, though, are always interesting to discuss.