I have a hard time A/Being headphones. I've found that if the signature is brand new to me, I have to spend a couple of days really listening and letting the signature seep in. I remember when I was struggling with how much I paid for the HF2 when I finally, "got it." I was listening to the song She's a Mystery Girl by Roy Orbison, the whole record actually; and all I could think was wow!
Of course that record has had that impact on me for a long time too, so it might not have had anything to do with the HF2, then again.