specifications:Microphonedirectivity: Omni-Direktionalsensitivity: -60dB ± 4dBfrequency response: 50Hz ~ 20KHzoutput impedance: 2.2KOhmHeadPhoneoutput impedance: 32Ohm ± 30%frequency response: 20Hz ~ 20KHzsensitivity: 112dB ± 4dB