i've also found their frequency response     http://personalaudio.ru/raa/otchety/naushniki/ultrasone-signature-dj/

i only want them for home use really and i've got a dac/amp (it's what blew the 2900 drivers up). I'd also be open to any other recommendations if you have them, I want the ultrasone's because they're easy on the ears (aren;t they?) 

I also have ath-ad900 but they're not really good for anything. Shouldn't have believed that top 100 review. 

someone is offering to sell them for $300, I currently have the ultrasone 2900, but i blew the drivers and now it crackles in lower frequencies. Would the Fostex 600 be better instead (also sold for about $300 now).   They're also for home use, isolation and portability are of no concern, I...

is signature DJ good for classical music and how is it with the vocals? i don't really care that much about bass 

so how good are they? compared to >$60 headphones out there 

how good are the actual Stax SRS-2170 headphones? zeo tends to go a bit nutty on his reviews and shouldn't be taken too seriously 

v1.2 vs black?

Fellow headfi-'ers I just bought HE-400s off ebay and the right channel goes crazy on some tracks when connected to my dac/amp. The same does not happen with other headphones I have, can you please tell me if you're experiencing the same or my unit is damaged? Track is...

is it a common thing with it? It used to not do it, but it started after the adapter was accidentally unplugged, replugged while the power switch was on. I think it sounds fine though, looks like everything is working.      Have you always had that sound? I bought it off ebay so I'm not...

The inputs are working and everything else is fine, but I'm not sure it sounds fine. I think it sounds a bit odd now, but i'm not even sure. I think there's some distortion now. 

I connected the geek pulse to the power adapter while it wa son power on, now it makes a clicking sound internally after being turned one (not immediately but after a short delay), is this a hunk of junk now?

AD900 (not x) vs AD1000x if anyone has an idea, also how they compare with HE-400s

how do the AD900's compare to headphones recently released?

  Except it doesn't have better mids, you can see it's more colored from your own graph. Mids for vocals.