specifications:Microphonedirectivity: Omni-Direktionalsensitivity: -54dB ± 3dBfrequency response: 20Hz ~ 20KHzoutput impedance: 2.2KOhmHeadPhoneoutput impedance: 32Ohm / 1KHzfrequency response: 20Hz ~ 20KHzsensitivity: 101dB ± 4dB