"I have all the tools that other mastering engineers have, but my little trick is knowing when not to use them, because I will gladly not use them to keep the faithful sound of the original tape."
I don't understand the concept of keeping "faithful to the sound of the original tape" with regards to the more important concept of being faithful to the spirit of the performance captured on the tape. I for one do not trust 100% of the engineers and producers who have ever lived 100% of the time. If a producer/engineer revisits an old recording and can bring something out that was lacking in the original, why not?