The RSM-120 goes strong due to its powerful sound characteristics: brilliant highs and treble, powerful bass; all in all remarkable volume characteristics. And thanks to the marginal sensitivity playback is very balanced. Features Impedance: < 600 ohms +/-30%, 1 kHz Frequency range: 50 Hz - 16 kHz Sensitivity: -51 dB +/-3 dB Incl. 5 m cable and a bag for easy transport Specs Dynamic cardiode microphone with switch Integrated XLR connection.