Corsair H2100 hissing and imbalanced ears

So i just got my new headset and plugged the dongle in, i initially had trouble installing the drivers but after getting them to work i discovered i had other problems. Every time i pause audio there will be a solid 5 seconds of a static hissing. My other problem is the left ear is noticeably louder than the right. i previously had a Corsair vengeance 2000 and had none of these problems.