Thanks for your reply, Russ69.
What I ultimately decided to do is send a message to Emotiva via their Facebook page.
I also have the Emotiva XSP-1 preamp for which I'm unable to determine the "gen" for, so I sent Emotiva the copyright date (that I found in the User Guide for one component) and the "Revision Date" (that I found in the manual for the other component) to see if they could use that to tell me which versions of the components I have. (I used to do some tech. writing, so I would think they should be able to figure it out from that.)
What I ultimately decided to do is send a message to Emotiva via their Facebook page.
I also have the Emotiva XSP-1 preamp for which I'm unable to determine the "gen" for, so I sent Emotiva the copyright date (that I found in the User Guide for one component) and the "Revision Date" (that I found in the manual for the other component) to see if they could use that to tell me which versions of the components I have. (I used to do some tech. writing, so I would think they should be able to figure it out from that.)