When listeing to music using headphones how does it compare? I don't have a previous iPhone to compare.
It sounded to me like it might be a little crisper and cleaner, but it's hard to tell for sure. At any rate, it was the same or possibly a teeny bit better. Definitely wasn't worse.
I was just remarking this to my wife this morning. I was listening at my work yesterday and I noticed the music was cleaner than I remember with my Touch and iPhone 3G...
Same on mine.
I think it has more to do with encoding than hardware playback.
Check this: