chess challenger elite a/s volt/ampère

Sort:
enjoychess4life
hi all, i have a vintage chess challenger elite a/s from Fidelity Electronics. there is no adapter available and I am curious to know what adapter i need. How many volt / ampère do i need? Any tips will be appreciated. Thanks Ray
justbefair

https://www.schachcomputer-online-museum.de/bildergalerie/fidelity/fidelity-chess-challenger-elite-a-s-pre-budapest-1983/

 

Links to a manual in German for the Fidelity Chess Challenger Eilite.   In German.

I looked it over and it doesn't seem to have voltage specifications. 

enjoychess4life

Indeed, no voltage indicators, but thanks!