Hi Tony,
Thanks for that. A few points I can make looking at that thread...
It's not a problem with the car wiring - I have my JVC CD player plugged into the same wiring, and that switches off correctly. It's also not (afaik) a negative-spike problem - I don't have a standalone amp, because I'm poor, so I have to run the empeg through the aux in of the JVC CD player.
I don't believe it's a delay in switching off, although I have seen that occur. Since this problem has arisen, I once missed the fact that the player was still playing, and got back to the car two hours later and only then noticed the empeg was still going!
It could be a loose wire in the docking connector, but the player has never cut out when I drive over bumps - and I do a fair bit of that.
It could also be the synchronisation issue. I'll give that a check and report back.
Cheers,
A.