[AndiiT]

Hi,
Excellent thread Ben.
Just a quick note, on some Grundig machines although a 5 Pin DIN socket is fitted they are only wired for 3 pin use the extra two pins being dummy ones to allow a 5 pin plug to be mated with the socket; The TK 146 is certainly wired in this way.

Also as has already been mentioned, similar to certain Philips models some Grundig machines also have voltage on the pins of certain sockets for use with an additional amplifier etc.

Regards

Andrew