The TWFK Series from Knowles are the armatures used for the High and Mid in the FreQShow.
I can conclude that the TWFK Series do in fact sound good. I would be interested to hear if this same topology of a large woofer driver and a TWFK Series dual balanced armature is being used in the JH10X3.
I could only imagine what six drivers would sound like!
I also noticed that my FreQShow IEMs got better with lots of play.
Honestly though, I think that I got a different FreQShow than everyone else since I had #1 and my impedance measures significantly lower (~10ohms/channel). Probably has to do with the crossover more than anything.
Would be very interested to hear someone with an early FreqShow model get the top of the line and comment.