I've been using the headset for a month or so and didn't have any problems until now.
It seems that if one tiny region of the cable (at the bottom of the plugs that connect the headset cable to the big extra cable) isn't completely extended then some notes won't play, and the sound won't come clear (it sounds like a really old and low quality headset).
I'm not sure if i should try to fix it or how to fix it but i'm sure one of you tech savvies out there probably know better than me.