I think they pretty much just used 2 of the 30095s in ZS5v2 and ZS6. ZS5v1 had 2 different BAs (one larger for midrange/treble transition that had very little impact overall between 6mm DD and other treble BA). I will be very surprised if they actually did this 5 way crossover, that is quite advanced even for established totl CIEM makers (but they are trying to nail it perfectly, something that KZ doesn't have to attempt). It's even more realistic to use 4 of the same treble BAs which are just playing quietly so that they have more headroom before they start squeaking like BAs do when pushed hard, and we do know that their DDs are all full range drivers and could cover mid range and probably have done in the past. The most realistic thing though is 2x2 config for mid range and treble with DD covering bass. Simple enough and will probably revolutionize KZ's overlooked mid range in the past.