Not once have I detected a whiff of substandard sound quality on a Beatles CD. They sounded as good as they sounded on vinyl in the ’60s due to the best sound-recording technology at the time (i.e., not exquisite but at the same time not half bad). And then they sounded a little bit better when they were remastered/enhanced for CDs in the ’90s. But they were never any kind of “problem.” Which makes the coming 9.9.09 release of all 12 Beatles albums in a digitally remastered state seem extremely dubious. It’s just greed, man.