I use emphasis for older cds , this can cause clipping on maximised newer cds.
Reduction of 2-3dbs is OK.

I won't use Sound Check again as I dislike the processed sound.

Level changes between albums can be perplexing,
random play throws this up.
Sound Check is not the answer.
I will either manually increase/reduce in I-Tunes or experiment with I-Volume.
I would like a display that showed true digital
levels on Tunes.
A glitch Tunes has thrown up recently is when playing random albums ,it sometimes only plays 1 track before moving on.
Hopefully to be corrected in next versions.

518, 568.2, D6Ks, D6KC, iMac dual core, iTunes 10.1 (lossless), Apogee Duet, Kuro 500A, Logic Studio, Sound Devices 702.