The MX-650 universal remote is programmed by IR codes for the A/V equipment. You can find the user manual and a pretty comprehensive set of these codes in that manual. BUT I wanted a code for the SECOND ZONE of the Denon 3808ci. I went thru the full list of Denon codes and I couldn't find Z2DVD, Z2NET, Z2... Z2ON, Z2OFF that would let me control/select the second zone. I know I can use the learning mode off of the old remote, but I wondered if any of you found the IR code that would simply enable the second zone of the Denon for the MX-650. (And the 3rd zone too)