Pros: Fast, detailed, more transparent- Capable driver
Cons: Lack of body, Build quality is questionable
To begin with, i don't know what Sony was thinking but creating this for DJ headphone is totally wrong.
It's not about the sound, but the body are too Plasticky and doesn't seem to be durable and the cups are actually open which mean that it doesn't have noise reduction at all.
Build quality for these phones are bad. it doesn't seem to use good material, the cups looks easy to break and I've seen lots of review in amazon mention design flaw that will broke the band ... Ah also everytime you move your head, it gives you cracking sound which is for me very disturbing.
Despite all that; the sound is fantastic for me (for 45 bucks headphone), i prefer this a lot rather than akg k701 or ath ad700. Doesn't mean that it is better than those two but i just like this better. It has adequate soundstage which is not too big like in akg k701 (so you don't feel the intimacy of listening to headphones). Treble extension are very good, it's nice and precise, i feel kind of sweet, at some point can be harsh too however compared to higher end headphones, and this is not verybright as in the ath ad 700. As for detail i feel it is more detailed than ad700 even more than my esw10jpn (well this is portable so...) but not as detailed as k701 though.
Ah, you don't really need an amp for these though amping (tried with my a/v receiver - onkyo tx-sr506 and it sounds better, more weight in the bass and treble extensions) does bring the "better" out of them but i don't think any phones below 250$ worth amping (and i got this for 45$), however when i use Ipod touch 4g to listen to this i feel it is more lean rather than running these from ipod classic 5g.
Bass is deep but is lacking in the mid bass part and therefore, i feel like the sounds is losing a bit of body.
I got this for 45$ used which to me is a very good deal (i think 96 new and + tax which is about 103$ shipped) and i think for 45$ one's can't argue much for better sound than these.