The KZ AS16 has a sensitivity of 1 kHz is 7-8 dB higher than that of traditional dynamic earphones, and the high-frequency sensitivity is more than 200% higher than that of conventional earphones. The distortion rate is less than one-third of the conventional entry-level earphones. We optimized the three-frequency performance to make a sound more transparent and balanced. Three-channel transmission of sound and airflow channels using integrated internal acoustic design. The new 31736 customized version of the dual array high frequency balanced armature scheme high precision assembly makes the unit lighter, The one-piece "armature + drive rod" structure is more stable, and the distortion rate is lower. 22955 custom version bass-frequency balanced armature The sensitivity is 3dB higher than the conventional 22955. The frequency response from 7Hz to 600Hz is more outstanding, and the low-frequency strength and elasticity are more mellow.