Etymotic Research er-4b Guida Utente

In addition to flanged eartips, ETYMOTIC Isolator earphones are
supplied with disposable foam eartips. Both types provide 
excellent sound reproduction when properly inserted. If the 
earphones seem to lack bass, insert the earplug deeper into the
ear canal to obtain a better seal, or try the foam eartip option.

These reusable eartips should be cleaned regularly.

Cleaning the flanged eartips
1. Carefully remove the eartip from the earphone.
2. Use water and mild soap to remove dirt and earwax.
3. Rinse and completely dry the eartip.
4. With a slight twisting motion, push the eartip on the 

stem until it fits securely.

• Disposable foam eartips compress to form a tight seal that holds 

the earphones firmly in place.

• The eartips at the end of the earphones can be replaced by 

sliding them off and on. A combination of twisting and pulling
is recommended for eartip removal.