After some use of a began to crack. I was a bit disappointed and thought to myself: Walk throw-item, but a few weeks later the crack disappeared just as it has appeared, and was not seen for about 3 years (or rather heard).
Only I lost times the fabric cover, but you can re-order the reasonably priced (the references are called the way "ear pads", took me several attempts before I found out the name).
Am not a sound expert and they use mostly in university or in the office. However, have also never heard negative, not in the headphones, even in people who have sometimes overheard.
The curvature of the part, because where the cable goes in, I find something funny; I wear them always exactly upside down and find that much more convenient, but if necessary I have funny ears.
CONCLUSION: Solid parts with gescheitem Saound that will accompany an at halfway animal welfare long. I find better than to rumzuärgern every year with new condoning.
Price / Performance: absolutely fair