10 bells actually.
This is a matter of opinion, but many popular brands of earphones would be Bose, Beats by Dre, SkullCandy, Shure, and Logitech. These are just the most popular, not taking into considerations any actual statistics.
There are two syllables in the word 'earphones'.
20 decibels
207 decibels.
70-100 decibels
in what
20 to 50 decibels (dB).
85 decibels maximum.
130 decibels -140 decibels close up maybe louder though
Roughly 150-160 decibels.
50 phons (decibels) is equivalent to 2 sones.
•Sound can be measured in many ways such as decibels. There is a special machine which you can by that measures how many decibels something makes. A pin makes 10 decibels where as a loud persons or a stereo can make up to 80 decibels. Volume is measured in decibels. So Frequency is measured in hertz