In ear headphones balanced armature driver auraseal technology series creative aurvana type of fitting in ear transmission mode wired features gold plated jacks manufacturer specific features auraseal sound function passive noise reduction sensitivity 112 dbmw impedance 28 ohm frequency response 10 17000 hz number of drivers 2 length of cable 12 m types of cable ofc straight cable jack 35 mm jack shape straight colour black earpiece mate