Well just to let everyone know, the 6.3mm plug worked in the Denon. It didn't seem to fit exactly, but it did the job. I now have a working 12 volt trigger! Wihoo!!!

My Stuff :

M80's
QS8's
VP150
EP800
Denon 4802
Emotiva XPA-3
Samsung BD-P3600
Sharp 65 Inch Aquos LCD