@creditingkarma,
I am afraid you are indeed mistaken. Both the M and the A-series tweeters are proprietary. These are different from the S series and have a bigger dome, with and without the diamond coating (28mm vs. 26mm) and two completely different motor systems. The S tweeter is built for Magico by SS (Your Rockport is also using that SS tweeter but with the regular SS dome). I just bought the A5, and they are undeniably incredible and worth all the “overhyped” surrounding them. I can only assume you have not heard them set up properly if you missed that.