I have this excelents Headphones but i don´t know the brand, does someone know ? the fq response is almost flat and they have a kind of red plastic inside.   http://imageshack.com/a/img841/3036/20iv.jpg http://imageshack.com/a/img838/904/lac6.jpg http://imageshack.com/a/img837/4967/uasa.jpg...