Just checked the driver on my HD650. Has the word hd580 and below that the word makro.
Bought mine from Jan Meier end of August.
Makro - http://en.wikipedia.org/wiki/Makro
I dont think they make headphones,but this is what google gave me.
Hey, If anyone gets a set of fake Senn 650's that say Orpheous on the drivers, ill pay the usual 650 price for them,so message me