If anybody is expecting a balanced, neutral, or anything other than "obscenely bright" signature from these, please save yourself the trouble.
These are the brightest headphones I've ever heard. The pains I had to go through to even *hear* a bass response are obscene.
Maybe a (much) earlier run was better balanced. Crinnacle originally described it as a V-shaped signature on his list (it's not, and he's since updated it to bright...). I bought my pair two years ago, so it must have been a very early run indeed, if that's the case.
So just warning you off, because there are several surprisingly false claims in the reviews section here: If anybody claims these have rich, warm bass, or a good sub-bass extension, they're outright lying, which is a crappy thing to do. They'd be great if you just listen to classical, but even lower register woodwinds don't render well with them. Build quality is fantastic, the cable is great, and if you like a cold, clinical, bright sound, they'll be fantastic.