Etymotic Research ER-15, User Manual, Page: 7 / 8

ER-20 High Fidelity earplugs are
ready-fit earplugs that preserve
sound quality while reducing sound
levels approximately 20 dB at all
frequencies. ER-20s reduce harmful
sound without distorting speech and music.
ER-6 Isolator earphones ™ are
used with personal players such
as CD, DVD, MP3 and computers.
ER-6 earphones have the best
sound quality and highest sound
isolation of all earphones and earbuds
in their class. ER-6 earphones
plug directly into your
Musicians Earplugs with
a special adapter.
Other Products
ER6-15