In-ear headphones KZ PR2 is equipped with a newly developed 13.2mm real planar unit. It completely cancels the voice coil structure and is replaced by ultra-low resistance nano-silver electroplating lines. The low-load diaphragm brings faster response speed and better high-frequency performance. 7+7 N52 rubidium magnet array. Wider frequency response and higher resolution. KZ PR2 is equipped with