Impedance
Precautions while using Earphones
Impedance
Another aspect that users should consider before buying headphone amp is the relationship between headphone impedance and the output impedance of the amp. As a general, the output impedance of the amp should be much lower than that of the impedance of the headphones to get clear and tight sound. It is a good idea to have an output impedance that is at least ten times less than that of headphone impedance.
Use earplugs
Understanding hearing loss
Over the ear
Earphone sound level limiters
Your Ears and Your ipod
Limit your listening
Use volume control
Minimizing the Risks
Turn down the music
Balance volume
Dont use earbuds
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