I have just installed my 3910 with a 3805, connected to a 434HDE - it looks fantastic btw. I have a problem though and am asking whether someone out there knows the answer. When I go to the setup menu on the 3910, the digital input screen shows the option to use Denon Link, but it is "greyed" out, so that I can't select it as I scroll down. The amp shows Denon Link as the input, but I can't seem to activate it from the 3910. Is there another part of the menu which I need to change in order to activate Denon Link, or do I have a fault? Any help much appreciated.