I have a friend that I implicity trust, some of the best ears I know of. He has listened to the Accuton Diamond tweeter in the Eidolon during a demonstration atempting to sale it to one of the major recording studios (he owns several recording studios). His response, was, it sounds like a diamond...Hard. The best tweeters I have heard by far are the Raven 2.0 and the higher end Focals, including TAD.
Regards,
Don
Regards,
Don