I did two nights already with this headset. Good on the first hearing one side did not play very well. I then hacked apart a little son and after I listened to the sound that emerges from this product.

The pros: I like deep bass, design, joints short style of headphone itself and a good power of the speakers more than my HD 200
The -: lack of clarity in the treble but nothing too serious for me, good power it shakes a bit and finally the ears doubt on its reliability.

In conclusion the seller told me that I bought this headphone for my 40 euros. For now I am satisfied if I can take a year with knowing that I will use it every weekend, I would be filled.
I had the opportunity to listen to a lot of very good Sennheiser headphones and SEDJ Pio 5000 and I think the sound really comes close.
For a headphone 40Euros is not very well mix with.