I recently bought Sennheiser G4AME ZERO headphones and I've had a bit of trouble getting it to sound right. When I hook them up to my PC the sound quality is really terrible and also quiet. I tried plugging it into both the front and back of the PC but it made no difference. However, the headphones did work with certain applications such as browsers and some games, but when I loaded up games like CS:GO and CoH2 the sound quality was unbelievably terrible. I played around with the in game audio options but it had no effect. I have a Gigabyte 78-LMT USB3 motherboard, so this may be the problem. I'm wondering if there is a software fix for this or will I have to upgrade my mobo/buy a sound card? Thanks for the help!