I'm using this cable to connect to a Chord Mojo and laptop streaming via Tidal. The cable complements the system well and enhances the sound for jazz and classical music, Would I go back to the standard cable? No!
If you are intending to use the HD800s with a portable headphone amplifier and go out and about then the stock cable is completely hopeless. This cable has a minijack and the 1.5m length is ideal on the move. The cable sounds great too. I am still burning it in but there is more detail in the sound audible already.