ER.20 Box


ER.20 Earplugs

The new ER•20XS is the highly-awaited next generation of Etymotic's industry-leading ETY•Plugs® High-Fidelity Earplugs. ER•20XS eartips are interchangeable. ER•20XS earplugs can also be used with foam eartips with essentially no change in response.

  • New, discreet design
  • Performance matches Etymotic's original high-fidelity earplugs developed for musicians
  • Unsurpassed clarity
  • 20-dB equal sound reduction across the spectrum of hearing
  • Richness of music is preserved; speech remains clear, just quieter
  • Reusable

ER•20XS earplugs are discreet and have the identical response of ETY•Plugs through 4 kHz.

Above 4 kHz they have improved high-frequency clarity without compromising protection.
ER•20XS earplugs feature a low-profile, stem-less design that sits snugly in the outer ear without protruding.

This makes it especially comfortable to wear under hats, helmets and other headgear.

ER•20XS earplugs come with a small, flexible pull tab that allows for easy removal, an easy-to-install neck cord and a carrying case.


  • ER•20XS earplugs
  • Neck cord
  • Case
  • Instructions

Product Downloads:

ER.20XS Neck Cord Removal and Assembly Guide - (293KB)

ER.20XS Pull Tab Removal and Assembly Guide (324k)

Hi-Fidelity Hearing Protection Brochure - (2.6Mb)

Technical Specifications

Instructions For Use

Inserting Your Ear Plugs

Insert the plug by grasping the end cap and inserting the eartip until the largest flange is sealed in the ear canal entrance. To ease insertion, moisten the plug and pull the ear outward and upward. Earplugs must be inserted correctly for optimal effectiveness.

Removing Your Earplugs

Remove with a slow twisting motion


  • Clean after each use.
  • Wipe clean with a damp cloth as needed.
  • Do not immerse earplugs in water.
  • Do not clean with harsh chemicals.
  • Alcohol is not recommended.


ER•20XS are reusable, but with repeated use, the eartips may lose elasticity.

For best performance and retention, if you use your ER•20XS constantly, consider replacing them every 3-6 months.





Neck Cord:

Note: When using a neck cord, take precautions that it does not catch on a nearby object.




ER38-14A Small Beige Foam Eartips
Package of 8 Eartips
Ear Canal Opening: 6-9mm

ER38-14C Large Yellow Foam Eartips
Package of 6 Eartips
Ear Canal Opening: 10-14mm

ER38-14F Black Foam Eartips

Package of 10 Eartips
Ear Canal Opening: 8-13mm

ER38-15SM Small Frost 3-Flange Eartips
Package of 10 Eartips
Ear Canal Opening: 7-11mm

ER20XS-TAB Pull Tabs
Package of 4 Pull Tabs

ER20XSC Extra Case for ER•20XS Earplugs
Extra Case for ER•20XS Earplugs

ER38-NC2 Neck Cord
Neck Cord for use with ER•20XS Earplugs

ER38-18CLX Clear 3-Flange Long Stem Eartips
Package of 10 Eartips
Ear Canal Opening: 8-13mm