I'd call it ever slightly v shaped but the warmth of the dynamic driver does add to the slight brightness and accuracy of the dual BA. One BA is tuned for mids/highs and the other is tuned for highs. The bass depending on source can sound bassy or tight, it seems the 11ohm rating is to blame here. the 4ohm output of my GS3 makes somewhat a bloomy bass on but still keeps tightness on the mids and highs, kinda nice for some tracks like edm, rap, some jazz, and even classical. Through my DX100 or DAC/AMPs with .1 or 1ohm output the bass tightens up considerably and you have a very linear sound from lows mids highs. The highs have the sparkle of a bright phone but non-fatiguing unless the track is just horribly mastered, the bass adds the body and impact of a dynamic but it is slightly boosted dead center (not mid-bass or sub-bass), and the mids are just slightly recessed (although not very apparent on most songs) which sounds dry and neutral.
Like I said I've thrown all genres at it and it does no wrong. Others have compared its sound sig to the HD600 and found similarities but I've never had the Hd600 for a long period of time. Hope that helps, if the deal comes back alive I would jump on it!