Earacoustic Audio STA Hi End 10mm+6mm Dual Dynamic Drivers In Ear Earphone H amp iBasso AMP16 – Dual JAN6418 pre order info margin iBasso AMP16 – Dual JAN6418 Tube + Class AB Hybrid Amplifier Card It improves over the OG that is utilized on the ultimate flagship Elysian Annihilator and introduces independent vents that eliminate the reverberation of the back chamber and also provide optimal pressure relief in the front chamber ensuring a pure and durable tone 05% Sensitivity >110 dB mW Low Frequency Rebound 50ms Impedance 27Ω Maximum Power 10000Gs Material ABS Resin + Zinc Alloy Electroplating Frame Surface Process Glossy Finish with Metal Coated Resin