Ozkan, sorry mate, did not want to be harsh on you: http://www.animations.physics.unsw.edu.au/jw/dB.htm
i just do not find it real to hear 1db difference in sound quality, rather in volume but not more. might be i am wrong but from my experience this will be not so obvious because how you measure c3 flat curve???
i agree, c3 is mid centric but not very much and is more neutral than many other players with boom bass signature.
anyway, i think it does not matter since i do not want to reconvince you and you will not change my opinion. i love what i hear from c3, if you do not i cannot help you. easiest way to make yourself happy is to sell what you do not like and buy what you like.