Moondrop Solis

Impedance: 7.5Ω±15% (@1khz)
Sensitivity: 120dB/Vrms(@1khz)                                                                                                                         
Frequency response: 20Hz-45000 Hz (free field. 1/4 inch MIC)
Effective frequency response: 20Hz-20000 Hz (IEC60318-4)
Detachable cable interface: 0.78-2pin 
High frequency: Sonion EST (electrostatic)
Mid-frequency: Softears D-MID-A
Low frequency: Sonion 37Series