okay, so it's only been 48 hours of burning in, not the 72 i had planned, but they're sounding rather sweet now, even out of ****ty equipment.
the bass has gotten more prominent (read: you can hear it), and they're ever so smooth. female vocals through these things are lush.
the vise-like clamping was me not pulling the adjustment bit out far enough. i thought it was as far as it could go, when it was only about 1/3 of the way out. much better now. still a bit on the tight side, but nothing that won't sort itself out with time.
i've decided once and for all there's no sense in listening to these through my gtxp. what a waste. it just sit there frowning about the hiss. i'll stick with my hd25sp for use with the pc, though i don't like those for extended listening, as they get a bit (only a bit) uncomfortable. great for portable use though.
heard back from todd... the supreme is shipping to me today, and i can't wait. oh, this is going to be too damned sweet. i'm going to turn off the lights, sit back in my ugly but comfy brown armchair, light up a joint, and put on some pink floyd. oh yeah.