Koss has been making heavy duty professional studio and broadcasting headphones for decades, and it is fair to say that their studio phones set the standard for all others. The Koss MV1 headphones are one of the latest models in Koss professional collection, adding some style and sophistication to the rock solid simplistic headphone models that came before it. These are great for professional DJs and musicians.
As is essential for studio headphones, the MV1s' closed cushions seal around the ear, holding sound in and locking noise out. That isolation is important for focus while working, as well as for hearing the entire frequency range without turning the volume way up. That isolation is further enhanced by the headband which is made of steel and rubber. The headband is comfortable but incredibly sturdy and it holds the earphone cushions tightly in place.
Weller Solder
The sound quality of the Koss MV1 headphones is great, and the level of detail amazing. Both the bass and the treble are very clear, and to me one of the most impressive things is that during louder parts of songs the sound does not get muddled or cluttered, and you can still hear all the individual elements of the sound clearly. Contrast that with the "wall of sound" you often run into with less serious headphones.
The older professional studio headphone models from Koss are quite heavy, which was possibly their main drawback. The Koss MV1 headphones are not light either, but they are an improvement on the older models and will not weigh your head down as much. The ear cushions' coating is made from rubber, though, which make your ears hot and sweaty after just a couple of songs. If you are a music professional then you can likely deal with that discomfort in favor of precision. But if you are a casual music fan, then the Koss Portapro headphones might be a better option for you.