Yes many are using DHC cables with adapters, but me my self are not using any adapters for my Abyss, just straight 3-pin mini XLR, that is a very stable and robust connector type for the headphones, but i got a few other mini adapters so i can use for different headphone types
The Prion 4S is the very best cable i have ever heard and do greater diffrence than many amps and DACs do, that is very remarkable to me who is not a cable beliver from the beginning.
And to @Nik you can sleep safley!
You do not need to by a new set of Prions for your other headphones, if you hear any diffrence with Peters Iridium DHC adapters, i will personal buy you a new set of Prions.
I buy all teories about higher resistance and and so on, but it is the reality that matters, and if you cant hear or feel any diffrence, then just be happy and save the money.
Just order the cable with the correct connector for you main headphone and use adapters for your secondary and third.