Built like a tank, reliable as a tank, as heavy as a tank.

These headphones are more than adequate for serious DJ use and go above in beyond in build quality. I must admit, I was skeptical at first about how well they were built, but after using them for a while I realized these headphones will be with me a long time. The sound quality is decent with tons of bass response. These would be adequate in a studio but I would probably go with the Sennheiser competitor for that type of use. Isolation is decent on these headphones but nothing to brag about. These headphones are extremely heavy for a pair of headphones. You'll get use to it after a while but sometimes after long periods of time you start to feel your head tilt back unnaturally. The weight wouldn't prevent me from buying another, although if I had some more money I would probably look at a little higher sound quality headphones. I haven't tried many headphones in this area though. When I bought these, I had read many reviews about other headphones breaking and falling apart which is why I bought these. I got exactly what I wanted and at a very good price. Like any product, it's not perfect, but it has everything needed to DJ and DJ well.