I had hoped to avoid the 'RE' discussion, but so be it.
The plethora of quality consumer electronics being manufactured (and designed) in China is impressive, in total, and it just seems that headphone technology would be a coming product offering.
My interests lie more in the Sennheiser and Stax competition, and, hopefully, not just re-engineered product (read: pale imitation with an exacting physical resemblance).
At the right price, a (quality) re-engineered R-10, HE90 / HE60 or L3000, especially if they are of no current / future interest to their creators, should be a viable audio product. Having enjoyed my Eastsound E5, I'd be very interested in it's headphone equivalent.