KZ Sonata X — 28-Driver Balanced Armature Flagship IEMKZ Sonata X Endgame 28 Driver Balanced Armature Flagship IEM In Hi Fi, "endgame" isn't about giving up the pursuit it's about finally finding the answer without compromise. The KZ Sonata X is the second generation evolution of the high end Sonata series, built around 28 balanced armature drivers, a precise 4 way electronic crossover, a fully redesigned acoustic structure, and a custom tuning system that puts the final word back in your hands. What