I think that it is a shame, in this day and age, to read that members of this forum have been cut off from some of our rich, recorded heritage because they have found the sound quality of those recordings to be obtrusive.
Fortunately, technology is moving us in the right direction. All of the Plangent Process corrected recordings that I have heard have been a revelation. IMHO, they absolutely make a silk purse out of a sow’s ear. I can only hope that the process gains more traction so that those concerned with sound quality can begin to enjoy more poorly recorded music.
This is not to imply that Plangent Process is a panacea for everything that can go wrong with a recording, but it goes a long way. And I can only imagine the results of future restoration software as the full weight of technology is brought to bare on the issue.