Does Your iPod Touch Hiss at You?

Anyone out there pick up an iPod Touch yet and use it with some good in-ear headphones? I grabbed mine last night to start on our review, and unfortunately the first thing I noticed was a big hiss through the headphones after I plugged in my Ultimate Ears Super.fi 5 Pros. Nothing playing, even--just the noise of the device while it's turned on. I'm used to a noticeable noise floor on my 80GB video iPod, but this was a completely different world.