Read this with a TV Shop salesman’s voice:
Are Hifiman HE-R10D too expensive for you? Why don’t you try building your own!? With the new " Hifi 50mm Headphone Housing Wood 32ohm Headset Driver High-end Over Ear Headphone Case With Audio Cable Fashion New Arrivals"
Catchy name, huh?
Personally I wouldn’t dare go near the complete headphone, but it would be interesting to hear the performance with some Peerless By Tymphany or Beyer Dynamic drivers in it.