annoying buzz

Hi all: Not sure if if my sub is about to croak, but while playing music, it occasionally emits this harsh buzzzzzz for about a second or two. Other than this strange behavior, it sounds and works fine. Connected directly to my receiver with a RCA monster cable. Never had a problem with...

I currently own the Hyper X Cloud and for the whole time I had it I didn't realize there was a bit of static that plays while the mic is plugged in. Whether the detachable mic is plugged in or the jack is plugged in It still plays a little static. It's very noticeable in recordings and some...