Dear @atmasphere : My knowledge level on the recording proccess is really poor, so I can't technically understand some issues you posted.
I remember that when I posted that a difference in digital recording for the better was that bass range can be recorded stereo due that digital has no limitation as analog that always needs the bass range mono and you posted that even that it could be that way normally digital comes in mono too due that the cost goes to high and in the other side engeeners are a little lazy to do it in the rigth way.
I know for your posts that you are a little biased/oriented through LP instead digital. Obviously that you have your reasons but even that and even my recording knowledge about still it's not clear for me you last paragraph:
"" the big difference between digital, tape and the mastering lathe is cost, not sound. ""
Ok, what if cost no object? still no quality differences between tape/analog and digital?
If we take the frequency ranges in the bass range it's clear an advantage of digital recording against analog and is something that any one can be aware through playback in our home system.
Now, I don't posted that the Studer is a bs of machine but that from some time now ( last around 10 years. ) it's not any more the quality reference due the huge digital improvements.
I still own several Telarc LPs that were recorded at the end of the 70's and early 80's. All were recorded with the PCM Soundstream ( pediestran if you like ) digital recorder and if you listen to some of those Telar's you be aware of its very high quality performance and after all those years those zeros and ones stay exactly the same and unaltered.
Next I paste what the Telarc engeeners explained on each LP about digital recording and the Soundstream specs. In my point of view and inside all my knowledge limitations those words are still in " good shape " and not only that but improved everything against those 16 bits to today PCM 32/384 or 4X DSD.
Analog can't compete against it and I don't have and even do not read yet any real/true evidence in favor of analog/tape vs digital: even human been has in the deep/internal ear an ADC because it's in digital way how the whole brain assimilates every kind of sound:
I repeat, cost no object because the issue is more important to define one s and for ever that digital today is the reference. It's not only your opinion, other audiophiles opinions or my opinion because it's not a matter of who is rith or wrong but where is the true.
What says your common sense? that the apple does not comes down the tree by gravity effects?
The overall subject could be controversial, what's not controversial is the reality behind those vintage analog recorder machines.
R.