I'm on my second Touch 2G- first one went back after a few weeks. I definitely noticed a difference in the top-end volume between the first (louder- from the Apple Online Store) and the second (replacement from a UK Apple Store).
Probably for the best as I tend to have the music on too loud anyways...
Well...I must apologize for my first posting. My hearing is just fine....it is my mind that is going!
At work I have a set of inexpensive Sony headsets that I use , but here at home I have a set of Sennheisers that use ....they have the "inline" volume controls where as the Sonys do not. Need I say more??