Headband headphones series sennheiser px line type of fitting on ear transmission mode wired features collapsible adjustable headband sound function in line volume control sound mode stereo sensitivity 114 dbmw impedance 32 ohm frequency response 15 27000 hz number of drivers 1 distortion factor 01 length of cable 12 m types of cable single sided straight cable jack 35 mm jack shape straight colour white headband colour white earcu