[Paul Philco322]

Deutchse Intstiut Normung forgive my spelling, usually these have a DIN type jack, my Grundig does, try something like this...............

https://www.amazon.com/TNP-Converter-Equ...4675&psc=1

More info..............

https://en.wikipedia.org/wiki/DIN_connector

My pal Ross who is a Euro Radio Whiz explained to me once that the reason German Engineers get so much performance from minimal tube counts is that radios in Germany were taxed on the amount of tubes they had, so if you keep tube count down you could sell for less. 

My Grundig plays well but the laminate is cracking and pulling off, another one sounds better than looks. 

Good luck. 

Paul