Guys guys, the difference is HUGE! If you don't get much more sound, it means you didn't do the right thing. Maybe you have the brand new iPod and can't trick it the same way. Dunno.
I have the 2nd gen 10gb iPod. Touchpad one.
iPod 4G - 20Gb
iPod 2G - 10Gb (Mac)
iBook G4 running OS X 10.3.7