Key Features of KZ ZAX 1DD+7BA Earphones -Hybrid driver configurations, 1 dynamic driver+7 balanced armatures -Zinc alloy faceplate+resin shell -High-purity OFC cable -Ergonomics design for comfortable wearing Driver Configurations -1 dynamic driver with 10mm large size diaphragm -2*30019 balanced armatures for vocal details -2 groups of 50024 balanced armatures for wide sound field -1*30095 balanced armature for high frequency Specs Sensitivity: 113dB Impedance: 24ohms Frequency: 10-40000Hz Cable length: 1.2m Connector: 0.75mm Plug: 3.5mm If you have any questions, please feel free to contact us.