Pros: durability, easy to drive, extremely loud, good isolation, powerful bass, shallow ear pads
Cons: everything is plastic, pleather on ear pads tore off, overwhelming bass
(excuse my english, it's not my native language)
The headphones feel kinda cheap. Pretty much everything on them is made of plastic, and if you move them around too much they tend to make a squeaking noise. No part of them has cracked or broke after more than 3 years of use, but I heard that tends to happen. The ear pads are made from artificial leather (I think), and they were okay, but after about 3 years they started to crack, and then started tearing off really soon (but you can get replacement for cheap). The pads are very shallow, meaning that after a few hours, your ears will be aching. The clamp pressure of the headband is quite strong as well. It has very little padding, but I found it quite comfortable. The cable is not detachable, but after years of use, it's still in perfect condition. It a coiled cable with both 3.5mm jack, and a screw-on quarter-inch jack, both gold-plated.
These headphones are intended for DJs, and they do their job quite well. They provide a substantial amount of isolation, perfect for working in loud night clubs (I know from experience). The cups rotate in all directions and are spring-loaded, great for pre-cueing tracks on one ear etc. At home, they are still a good all-round headphone, especially if you like more bass and/or listen to a lot of electronic and hip-hop music. They are not the most comfortable headphones, but if you take them of for 5 minutes ever hour or two, you should be fine. They can be driven from mobile devices without an amp, and they can be rediculously loud when plugged into my MacBook. They also fold up and come with a pullstring pouch.
SOUND AND PERFORMANCE
With their bass emphasis they are more suitable for electronic music and for working in noisy environments (where you need to hear the beat...). The treble is OK, the mid-range feels a bit weaker and undefined. The bass is quite extended and feels precise, also reasonably punchy. I do not recommend them if you listen to a lot of acoustic genres... They perform well while watching movies.
A good investment IF you're a DJ, or you need them for studio work maybe...Value for money is not bad, they are quite durable. Sound is adapted for electronic genres.