I like the review and we seem to agree on some music choices....King Crimson, Steely Dan, Fleetwood Mac, and last but not least Supertramp's Crime of the Century. I also appreciate that you used the FLC8S as a comparison. My other favorite IEM besides the A7 is the FLC 8D (which is basically a FLC8N tuned red - grey for the low end). I don't hear the piezo issue that others are referring to, but maybe my old ears just can't differentiate issues at those frequencies as they used to. I gather the issue is with violins.

I want to second that appreciation for including the FLC8s. I picked up an FLC8s 5 years ago and keep reading reviews to see if its been bested in its price range yet. Doesnt seem to so.