Headband headphones dj headphones series sennheiser hd line type of fitting on ear transmission mode wired features gold plated jacks function rotatable earcups sound mode stereo sensitivity 120 dbmw impedance 70 ohm frequency response 16 22000 hz max power handling 200 mw number of drivers 1 voice coil aluminium distortion factor 03 length of cable 15 m types of cable single sided removable cable straight cable steel cable spiral cord