The funny speaker cables with the mystery network box will have an inductor that suppresses all ultrasonics. They just wont get to the tweeter at all. Whether they sound good in the audible frequencies is a matter of personal taste.
I don't disagree the diamond sounds a lot better to the ears than the original Eidolon.
My problem with the Eidolons, be it original or Diamond, is that the ceramic midrange is voiced a bit too high which affects the texture of violins in orchestral music. Easy fix....
