If you are looking for a pair of headphones that can play loud without distortion, this is a very good choice.
I am and audio engineer, I wouldn't use them for mixing or mastering (perhaps just to check a mix afterwards), the sound is too "midrangy" and to my ears not very pristine for making mixing decisions.
That being said, I checked the technical specifications of this headphones and they are comparable with the legendary SONY MDR7506 (which I also own). I compare them just to be sure that the loudness would be comparable with a professional pair of headphones, and I have to say they are equally loud.
Since they are rather affordable, they are made entirely of plastic which of course doesn't look fancy nor sturdy. However, they are quite comfortable I must say.
The cable is quite long, comparable in length with the classic Sennheiser HD 202.
Anyways, if you are looking for a pair of headphones to listen to music, to connect to a keyboard or an e-drumset that are fairly loud with no distortion this is your choice.