I agree with Aaron on the sound of the Ebonies, I also heard them at the SF meet. I have far from golden ears, but there was definitely a difference between them and the PHs, and I am comfortable I could do a blind test. It was noisy in the room so I couldn't make a good evaluation of the specifics, but the Ebony was, for me, noticeably smoother and more balanced. No idea if anything else in the headphone was tweaked, but if not then the wood...