I'm in the same boat- looking for audiophile clarity and accuracy in the mids and highs with powerful tight bass in a low ohm package for portable use. Does anyone have any thoughts on which of these I should consider to meet this criteria or even which I should cross off the list, or other recommendations?
Ultrasone Pro 900
Phiaton MS 400
Sennheiser Amperior (not yet available)
V Moda M100 (not yet available)
Ultrasone Edition 8 (if I hit the lottery)
How did MDR-MA900 make it onto that list?
Anyways - I would suggest the Ultrasone HFI-2400. I'd suggest the HFI-780 too, but I've never tried them, and I'm not a fan of suggesting things I haven't tried. The closed Ultrasones I have tried (and I can't remember the model #s for the life of me - this was years ago) were good enough for their price though. The HFI-2400 is really a quite good headphone for the ~$200 you can usually pick it up for. The downside is, they're open-backed. Hence the 780. The 780 are cheaper, so it might be worth a try, and send them back if you're unhappy. The 2400 has more bass than I really know what to do with though (I couldn't keep them). Probably "just right" for some listeners.