Every time you are exposed to loud noise, such as a gun shot or loud rock concert, your hearing acuity decreases. This is usually a temporary phenomena and is referred to as the temporary threshold shift. Repeated exposure to these high volumes, however, will probably cause a permanent decrease in your hearing ability. If your ears are ringing after a jam session or listening to your music, that is a sign that you need to turn it down.
If you have to pump up the volume on your iPod to override outside sounds in order to hear your music, you could be permanently damaging your hearing. The solution is the EX29 noise cancelling reduction headphones. The EX29 headphones block out external noise allowing you to hear the fine details of your music without blowing out your ear drums.
