so ive had these for almost a year now and they are by far the best headphones iv ever used anyways on saturday night i was mixing away and all of a sudden my left earphone stoped playin base, after i got home i tested it again and it still wasnt working, then the next day i tested it and it works fine is this common? w t f i dont want it to go out again while im playing im divided weather to go buy a new pair