Does your iPhone 3G sound different?

Here’s one for the 3G owners: does your iPhone sound different to your old iPhone when you’re playing music? I’m using the same headphones, same EQ settings and same music, but the 3G sounds less bassy than the first-gen iPhone: it’s hard to explain, but the best way I can describe it is that the overall sound is crisper but it’s lost some of the low-end thump. Which is a pain when there’s no manual EQ setting.

Anybody else finding the same thing? It’s definitely not my imagination.