I have a denon mini cd reciever and matching cassette deck. Approx 10 - 15 years old I think.
The receiver has a remote sensor and the Cassette can be controlled with the remote if the two units are connected via a denon control cable.
This looks to have a 3.5mm RTS jack plug same as modern(ish) headphones.
Does anyone know if a standard 3.5mm Aux lead would work? Or have they used non-standard pinouts?