Plastic on the larger housing all around the pads. The smaller housing connecting the headband is plastic with a metal grill with the metal Q badge.

I'll have an opportunity to compare K701, K702 and Q701 at a meet this weekend, mind you differences between the three if subtle might be as easily found between three of any one model.
I've spoken to someone who has contacts at AKG who insist the foam in the pads and the internal damping have been tweaked with the Q, they also say there are differences in the internal damping between 1 and 2 of the Ks.
Other people say they have spoken to AKG who say there are no differences, so obviously there's some problem with communications at AKG.
Will be interesting to hear for myself.
Oh and also, regarding the "full sized amp" - the E9 is a full-powered amp, supplying more power than the average desktop amp out there. As an ex-702 owner I can confirm it drives them with ease. For all its niggles and faults in essential sound quality it remains as good as any (much more expensive) amp I've heard.
I have no idea what they have done to this headphone. Some people say the mids were tweaked by Quincy, others say the damping and bass has been tweaked slightly. Then there is the issue about the pads themselves being different. Please post your impressions!
I wish AKG could just disclose some solid information about these cans. I doubt that will happen though...





















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