I'm very happy with my Oppo PM-3.
I ordered it on a french webshop, quite more expensive than the original oppo retail price, but this is what we call European union...
First the packaging is very good, the hardcase is strong and easy to open, then the headphone is very well made, and very comfortable, easy to set, and to wear, not too heavy, quite isolating even it coul'd be better about isolation, it's not too bad, because when turned off it's not too difficult to understand conversations.
The cans are big, but not too big, just the right size for my big ears.
As a compartion, the Senn Momentum over ear is far too small inside for me and very uncomfortable compared to the oppo.
the articulation on cans is useful, easier to put on the neck.
The lambskin(?, but definitely natural skin) is very soft and smooth
The overall looking is simple efficient and gives a quality impression, even on the head.
About the sound, I like it, it's not a strong metal effect treble, but a kind of sensitive sound, the bass frquencies are quite not too strong, but has a kind of deep sound even it's soft.
The middle frequency is very clear for me.
I listened it on a DX90, with flat equalizer, +6 gain,and half power volume, the results are good, I like it, I keep it.
Now, the quest will be the right player…probably a hifiman source.