NATIONAL SAVE YOUR HEARING DAYHow ears are important to us at the same time hearing also .If ears are good then hearing sounds also will be fine . That's why doctors ,and at home our beloved people will always say to us that use the earphone sounds / volume as possible in low /favourable .Otherwise it will be defect your earbuds .Maybe there has many reason to not be an audible properly ; age heritage ,Noise Neurological disorder ,chemical etc ..Whatever the causes but some patients can be treated well as per their symptoms ,if it has small .Otherwise doctors can be remedied to setup a audible missions or even can't that too !Anyhow ,you should care about your hearing ,no one can do it better than you