Didn't go through the 27 pages of replies, so pardon me if this was mentioned already.
For those of you frustrated with the custom wiring of the cups requiring custom cables. There is a simple fix.
Just take apart the right-cup using hex 15 bit and take out the driver with the 2.5mm PCB board. The default wiring should be to pin 3 and pin 4. Where 4 is the ground. Simply desolder pin 3 and solder it to pin 2. I copied the wiring from the left-cup. Voila now this headphone takes dual-mono 2.5mm cables!
Beware with this mod, the stock cables will only ever send left-channel to both cups. This is because to make the cable reversible, they wired the left-channel to the same pole on both the left and right-side of the cable. The same is true for the right-channel. (thus the requirement of having the right-cup wired in a non-standard way). All this bull so you can reverse the cable (seriously... who needs this feature???)
If you got aftermarket but non-custom 3 pole cables that worked before, rejoice. Now you actually get left and right channel! Instead of just the left-channel to both cups. (You can check this using the sound mixer in Windows). AFAIK, unless its the hart custom cable, the off the shelf aftermarket cables should not have the weird reversible wiring so it would always send left-channel to both cups. (Sol Republic Master Tracks cable is the one I have been using)
Finally, one cable to rule them all!