First let me say that I LOVE these phones, the have awesome bass, decent mids and tamed highs which is what I like, if you're someone who likes sparkling highs, these aren't for you. These also work very well if you are like me and wear your headphones on the back of your neck.
 
A couple things I don't like, the connector has the 3 rings on it so that when you connect it to a phone it will power the in-line microphone but this kind of prevents it from operating on older equipment. I have an 11 year old Sony CD Walkman and this headphone will not work with this Walkman because the connector is made for modern devices.
 
The other thing is the ear pads were horribly stiff when I first got them, so much so that I switched therm out for a pair of pads off a pair of Panasonic's I had, after doing this it made them quite comfortable to wear. 
 
Long and short of this is I would highly recommend these to someone who loves bass heavy headphones.

I decided to purchase these so that I wouldn't wear out my Aerial7 Pheonix's. I prefer headphones with swiveling ear cups so that I can wear them on the back of my neck so I don't lose my hair from headphones. Comfort isn't the greatest in the world but they are tolerable for about an hour. The equipment that these are being used with a Dell Vostro 1500 and 6+ year old Sony CD Walkmans.
 
For me, the phones sound best when they're connected to a Walkman. Here are the specs to these phones.
 
Frequency Response: 10-24,000 Hz
Sensitivity: 102 db
Impedance: 24 ohms
Driver: CCAW
Cord: 4 feet
Magnet: Neodymium

These are great headphones. I got these for free off a website called Lockerz, so I didn't spend any money on these but now that I've had them, I would definitely buy them. Sound is very good, bass is very deep and to me it booms (but I like that), mids are decent and highs are there but not overwhelming.
 
Build is the best I have ever had, they're somewhat heavy but I don't mind that if that means they'll last but they do get a little heavy on the head after a few hours.
 
Comes with a carrying sack, 2 different cables one is a heavy duty coiled cable and the other is a much smaller gauge cable. It also comes with a 1/4 adapter.
 
I don't do very well reviews so if you have any questions, please don't hesitate to ask, I'll do the best I can to answer them.