[roxxor]

I've been burning these in for a good 40 hours now. Their signature doesn't seem to have changed to dramatically. They still present a very harsh treble, sometimes sibilant. Vocals are recessed, but harsh as well. Low end thus far is really really nice. That's how they sound out of my iPod, even at low volume (unlike HiFlight, I notice lots of distortion at moderate to high volumes with the iPod volume control).

Strangely, they sound completely different from my laptop. They're not harsh at all. No distortion. No artifacts. No sibilance. In fact, they're very very smooth.

I don't quite understand why there's this difference. My plan is to continue to burn them in for another 40 hours or so before I re-evaluate. I'll see if an amp can calm them down as well.

To be honest, I'll be disappointed if they don't improve with the iPod alone, as their primary function was to serve as running phones.