The bad effect of loud sound on hearing is a well-known fact. For hearing impairment, it is necessary to be exposed to a sound louder than 90 dB for 6-7 hours every day. Although it may seem difficult to do this with music tools such as Walkman, listening for a long time and at high volume can still cause harm. Especially musicians and DJs who make loud music are at risk. In addition, there is also a risk of infection in the fecal tract of small headphones inserted into the ear canal.