I have far less favorable review of this headphone.
First off, the beryllium only appear on the center of the driver cone, I don't think it even covers close to 1/2 of the total surface area, of course, PET film throughout, just the center section is coated with our favorite toxic metal. (to be fair, it is quite safe sealed like this.)
The Grado SR325/Music II like can, well, not it is not. The can itself is very shallow, what you see in the photo is ALL you get, unlike Grade, which hide 1/2 of the metal can under their earpad. Not only that, the aluminum shell is only there for decorative purposes, and all the aluminum on each side would be similar to what you get from a coke can. The actual structure is plastic, and the aluminum cover on top to make it look like they cut it with a lathe.
The sound I'd say would be about right for the price point, but other users reports that headphones from major audio brands (not fashion brands like beats) at similar price would beat it pretty easily.
The good?
The cable it come with is one of the best cable on headphone I've ever seen, construction and ease of use wise that is. The cable is thick enough that it is hard to tangle, yet soft enough to not annoy you. The material and feel of the cable is great, there just isn't any other cable that I've seen would come even close.
The looks, well. For the price, there isn't a prettier headphone anywhere. Especially if you like the metallic look.
The headband quality is also extremely high, better than most high end headphones even. The size adjustment is also very very very well made, from my own experience, the extension with track would be fairly expensive to make.
Independent L/R wiring, well... it would be simple to make a balanced cable for that...
Why did I get it?
Well, I don't intend to keep the driver there for long... I'm thinking about shoehorning a T50RP driver in there sometime later, perhaps with a 3D printed adapter that would also accept Grado foams. I find everything is great with this headphone, I just don't like the tiny cavity and the driver.