used for 8 months
I have not been wrong before, Koss, AKG ...
Before buying I did some tests with my CD store and this is the one that convinced me the 750 model is less well defined but also in serious and I liked him another which I Forgot reference.

Well it is not given.

Using sound recording, mixing, studio.
Comfortable to wear although it may take a little warm.

Solid and unscrewed cables, mini and large jack provided along suitcase / bag.

Exelente quality, the spectrum is respected and superb stereo imaging.
Insulation for a closed headphone is very good.