Upgraded 4BA+1DD Hybrid Earphones &Magnetic Dynamic Unit]As an upgraded version of K2 ZS10, the Pro features self-customized balanced armatures which include two 30095 drivers for highs, two 50060 drivers for mids. With this configuration, the sound is transient, dynamic, and bright in all respects. While maintaining the previous performance, the highs of this model is extended beyond 40kHz lt also adopts the second-generation Tesla double magnetic dynamic unit Exquisite Craft The faceplate is made of 304 stainless steel while the cavity is made from imported resin. The two different material not only presents an elegant look and shimmer but also be practical and durable. The detachable gold-plated ODC cable offers fully upgradability and the limit slot protection design greatly avoids the pin from breaking and prolongs the service life of the interface PCB Dividing BoardThe PCB board is added to give full play to all the drivers, displaying a smooth, sensible, detailed mus