Yes good point about the shape of aging masters. However the thing about most LP’s from many years ago, is that cartridges of the era weren’t able to handle low bass and dynamics (as opposed to today), so there was very often a dub of the master mixdown made for LP cutting. So aside from extra limiting/compressing there was also an extra tape generation or more. Compounding the problem, many engineers that did work liked to label the tapes they worked on as "master," so it could be confusing to find and use best available tapes for reissues over the years. That’s why I like to have a great analog system and a great digital one as well (within limits). Galvanic isolation (like the Etheregen I use) go a very long way to making digital enjoyable.