[Edit 10 June 2017: Tutorials for demastering your music tracks using the method described in this thread follow: Demastering Part 1 (What and Why).pdf Demastering Part 2 (How To).pdf   Part 3 (Advanced Topics) will follow shortly.]   Recently I bought a new/old stock (NOS) CD from Amazon, originally recorded on analog tape in 1976, released on vinyl then much later re-released on CD. My particular CD dates from 1990, just before the wide distribution and use in 199