The new CKR series from Audio Technica has actually been announced a few weeks ago, but they only just hit the street in Japan. The lower end of the series (ATH-CKR7) isn't that interesting, but the higher end models (ATH-CKR9 / -CKR10) features what AT called 'Dual Phase' dynamic drivers. Basically it is a dual dynamic driver setup in opposite phase and direction (if they are in the same direction, they would have cancelled each other. But instead they are enhancing each other in the current setup). It is a rather unconventional design, to say the least. CKR9 will be around US$260 and CKR10 will be around $350.