Samsung SPH-A680 / VM-A680

my sumsung sph a680 has a problem. The problem is that the sound is too low..the sound volume is the max at eight already but still hear it too low....I can't barely hear the person I am talking to on the phone. application sound is way way too low...every sound is low....not suppose to be this low when the volume is 8 for application,sound,game, and voice. Anyone know whats wrong?