I have been using a 172/200 for about 4 years. Despite my ownership, I have been confused and aggravated in trying to choose a path forward. I didn’t really understand Naim’s philosophy terribly well. I’ve just happened upon these 2 videos, and now I get it. Now the lights are on. I am sharing here for others that will surely come asking “how does this stuff work?” These videos explain much of the classic line, including the mysterious Core. I got a lot more from watching these 2 videos than I have from pouring through forums threads and reading the Naim manuals. Not I’m bashing any of those sources, but you know how it goes; a picture is worth a thousand words.
Hopefully this post will help others in the future. I know these things have been covered on the forum extensively, but still, visual aids can be great.