Type semi-open, dynamic headphones Sensitivity 101 dB/mW, 114 dB/V Frequency range 18 to 24,000 Hz Rated impedance 55 ohms Max. input power 200 mW Earpads leatherette and velvet Cable 3 m single-sided and 5 m coiled cable (99,9% oxygen-free); plug-in cable on headphones (mini-XLR connector) Connector gold plated stereo mini jack Adapter gold plated 1/8" to 1/4" screw-on adapter Net weight (without cable) 225 g (7.9 oz.) Shipping weight 550 g (19.4 oz.)