Ok, just checked the current situation in Ebay...
I'd suffer about $200 for a Duo-R shipped to Finland I understood that the controller port pinout of Duo-R is the same as TG-16, but the Duo-R has a mini Din8 -port, right? I have 5 spanking new controllers for my TG-16, but does someone sell those DIN8 -> mini DIN8 -adapters? Or am I just completely lost here?
Duo-R has a different controller port than the TG-16. There DO exist adapters but finding them may be a challenge. There also exists reverse Turbo Taps if you can find one which may be a better solution.