^ Check out this movie:
https://www.youtube.com/watch?v=c7mUKbi8CEg - it explains whole subject.
The same problem is with remastering of CDs (like Ayu's BEST) - it doesn't make records sound better, after "cleaning" they sound louder and less dynamic.
Example: original "No way to say" from "Memorial address" -
7, remastered version from "A BEST II" and "A COMPLETE" -
5. It's the same with other songs - they lost 1-2 levels down after "remaster". I'm surprised "A BEST -15th Anniversary Edition-" is a postitive exception (dynamic of some songs leveled up comparing to their original versions, like "M": original -
7, "A COMPLETE" -
5, "A BEST -15th anni-" -
8).