Doepfer may use the same keys, but they use a different hammer system.
I mailed to them one time and they explained it to me, if you want, i can forward the mail to you, because it's in german.
@ Drusillus: The PK88 is cool. It only sends note on and off and pedal messages, but that's enough for me. It also looks very nice :)
"But who needs the left hand for playing anyway?"
"Someone who is not only obsessed with soloing!"
"I heard these people exist. But I think it's only a myth!"