Got my hd 6xx today. Straight out of the box it sound veiled, conjested and dull. I have the hd 598 to compare to and 598 sound like from another world compared to 6xx. I am thinking i have got some defective product. I can't return it because i live in India(oversea shipping and all)
Mine is made in Romania. I found online that some romanian made unit has some difference, and later they fixed it. Anyway i wasnt expecting anything dramatic difference like this. There isnt much channel imbalance to speak of but the overall sound is dull and congested. I don't know how it could be.
I power it via fiio btr3 . It outputs like 60mw to 50ohm or something. I don't have any other dac or amp. is it the problem. Would buying a amp solve the problem.