i had a great time. here's some quick impressions, I didn't spend a great deal of time on any one headphone.
Darth Beyers-woooow! what impact! When I first hit the play button I thought I was back home listening to 2-channel. Wonderful realistic bass and therefore it commands presence. Are the non-woodied ones this good? I find most headphones cannot do bass convincingly but these really impressed me, which is a difficult thing to do. My favorite headphones of the night! Of course, they are not as detailed or balanced as some other high end headphones, but I would gladly trade that for the excellent bass.
shure e500- crystal clarity and dead flat through the mid-high range. Very accurate response and very hi-fidelity. Surprisingly efficient straight out of a DAP, much moreso than other IEM's.
Jon's modded sr-60- the gs1000 pads made them sound very interesting. The low-end now actually exists! (referring to the deeper low-end around 30hz). Perhaps this is more pronounced because of a slight mid bass dip? Mids have developed a laid back character, and the highs are harsh and sibilant. My theory is that the larger air cavity produces greater deep bass, but since the drivers are further away from the ears than originally designed/tuned, you end up having to turn the headphones up to compensate for the volume loss. The highs travel the extra distance with the greatest efficiency so they are much much more pronounced (too harsh for my ears).
senn 595-sweet highs and a good job doing the low regions (again 30-60hz). Where's the midbass and mids?