Thanks for the info.
For comparison, I just have a Denon AH-d1100 headphone, which is 32Ohm in impediance from the spec and should be easily powered by my Edifier C3. This is my first time running a high-impedance so i am not sure what to be expeced(and what equipment is needed)
I think i am not a basshead, what i am expecting is just normal bass performance.
This is also why i choose HD6xx, which known for its neutral sound.