I owned the CODA #8 and own the CODA 07x preamp. I demoed the CODA #16 with the 07x at my CODA dealer. It was very easy to hear the difference between the #8 and #16. I was primed to get the #16 but then I took a chance and upgraded my Krell K-300i integrated to the Krell Dou 175XD amp.
Both the CODA #16 and 175XD are Class A amps, though they get there in a different ways. I thought the Krell 175XD was better than the CODA #8 and more like the CODA #16. I am very happy with the 175XD though I am using it as a headphone amp.
I need a 2-channel amp for my Livingroom much into the future. I am looking at the CODA #16, the soon to be released Krell KSA i400, or a used Krell Dou 300XD.