This old chestnut gets trotted out here from time to time when someone thinks they have discovered a way to make the iPod louder.
Patrick is right in saying it
doesn't work.
Increasing the song's volume using iTunes will do nothing to raise the maximum volume of the iPod.
If you increase the volume of a song in iTunes, all you do is make it so that the maximum volume on the iPod is reached before the volume bar is at full.
For example, if you increase a track's volume in iTunes by +100% then when it's on the iPod you will find that that track hits it's maximum volume level at about half volume, and turning the iPod up to full volume will not increase the volume any higher after this point. A track which has not had it's volume altered in iTunes will reach exactly the same sound level, although of course you will need to turn the volume level of the iPod to full in this instance.
Try it for yourself. And no, I do not have the volume limit set to half, I have it set to maximum.
My American bought 6G 160 Classic has an EU volume limiter built in.
No, it does not. Since when has the United States of America been subject to European law?
And even if it were, the EU volume limit is a
software restriction and can only be bypassed by actually removing this software.