Sony DR-Z7, absolutely mint, just received today. Bought from someone who stored them in a closet for 40 years at quite a large premium...
100% die-cast aluminum with a gorgeous silver finish, these photos don't do it justice. In person they almost appear to glow.
The incredibly beautiful dimpled-dome driver, huge (53mm) and coated in palladium. Non-resonant SBMC frame. Left is DR-Z6, right is DR-Z7.
Top-shelf sound, better than anything I've ever owned or heard. I regret nothing; these headphones will stay with me for my entire life.
Do you like them more then Z6?
More than the Z6, more than my TH600, and more than the NAD RP18 that I (unfortunately) had to sell to get them.
They're not like other headphones, they're not going to "wow" you with an insanely huge soundstage or laser-etched imaging, but what they will do is provide ridiculously good transients as well as a nice, neutral, transparent sound signature. You can discern everything, you can hear everything, if it's there in the recording they will render it flawlessly. I've thrown the densest cluster****s of music at them, and they separate it all out effortlessly. It is also the only dynamic in existence that manages to be so fast and yet is completely devoid of any harshness, splashiness, or distortion. And, while their bass isn't particularly prominent, they do something I've never heard before; they provide impact not only on the low end but throughout the entire frequency spectrum, which is more than satisfying for any of my bass heavy songs. If there's bass in the track, these things will slam like no tomorrow.
The Z6 sounds similar, but with more bass, a bit boomy, and not not nearly as clean. The Z7's bass is more stat-like in that it's mostly devoid of bass bloom, which is very unusual for a dynamic. This is probably due to the high rigidity of the diaphragm caused by the palladium coating.
They definitely wouldn't be most people's cup of tea; most people would find them too bright, and some might even get headaches from them, but for me they're a perfect match. They're my favorite headphones of the many I've had the pleasure of listening to, and I don't think anything will ever be able to take that throne from them.
Edited by takato14 - 1/30/14 at 9:25am