Normalizing MP3's, bad for quality?

When using a tool like MP3 Gain for normalizing MP3 files, does this affect the quality of the sound (assuming the tool doesn’t gain above 0 dB)?

What tool do you guys/girls advice to use? I’ve been using MP3 Gain for some time but I can’t really tell if there is a difference in quality. The gained file ofcourse sounds louder, so it sounds different. But I just can’t determine whether this is just the difference in volume I’m hearing, or the quality that has degraded.

the quality is the same but the volume is changed by normalizing. Normally this is not such a problem unless the the author of the music intended a very volume dynamic music. I wouldn’t recommend it for trance, techno, hardcore etc. because this music relies on the constant changing volume!

greetz

Originally posted by theunbeatable
[B]the quality is the same but the volume is changed by normalizing. [B]

I know, but there are different ways to do this… (rms, peak etc)… I guess that RMS is for the best, right?

yes, RMS its better than peak