Control the volume: listening to MP3 or use the phone when the volume is transferred to 40-50 dB, to achieve the degree of clarity can not exceed 60% of maximum volume (MP3 maximum volume of 100 dB).
He says that teenagers should set the volume control on their music players to somewhere between one-half and two-thirds the highest level,never louder.
VOA: special.2010.09.28
It automatically mutes the TV speakers and allows you to controlthevolume on the earbuds or any other headphones you choose.
The new 2013 line allows you to choose between 4 different EQ modes, and the dial allowing you to controlthevolume of game vs. voice chat is a cool feature.