Headband headphones series marshall major type of fitting on ear transmission mode wired features gold plated jacks sound function passive noise reduction sensitivity 99 dbmw impedance 32 ohm frequency response 20 20000 hz max power handling 20 mw driver 40 mm types of cable single sided spiral cord jack 35 mm jack shape straight colour black material leather headband earcup material leather included in delivery extension cable 63 mm a