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I got them without the warranty paper (regisration card) and the sound I did not like (soap, deaf), I'm listening to the built-in PC audio card, so I thought that it might be a fake?

I also want to know what's the difference between green box (30 series) and the blue box

and - only for the Japanese market?


Here are my pictures:


In this video my headphones are very similar


Edited by wolfire - 1/6/14 at 3:05am