These sound great when used with a custom plug, but are very expensive considering it's size and build quality. All seem to eventually break along the seam ...

Designed for use with the Westone's DefendEar® Concert (Style 49) Musicians' Earplugs. Etymotic filters feature a flat frequency response that allows ...

Buy Etymotic Research® ER-25 Single Filter for Musicians' Earplugs™ (Blue) on Amazon.com ✓ FREE SHIPPING on qualified orders.

The ER-25 Musician Filters have an increased diaphragm stiffness and an acoustical mass channel molded into the button for more noise reduction.

Designed for use with the Westone's DefendEar® Concert (Style 49) Musicians' Earplugs. Etymotic filters feature a flat frequency response that allows ...

ER-25 Filter, Single. 4 reviews. $40.00. ER38-NC1 Neck Cord for Electronic Hearing Protection-0 Out of Stock. ER38-NC1 Neck Cord for Electronic Hearing ...

Etymotic sealed-diaphragm solid filters provide approximately 30 dB attenuation (5 dB more than the ER-25), based on measures performed at E-A-R Cal ...

One replacement filter for use with Perfect-Fit Model ER Custom Musician Ear Plugs or Westone Style 49, or with most other custom Musicians Ear Plugs made ...

Replacment filter for Etymotic musicians earplugs. Comes in 4 different attenuations, ER•9(-9dB), ER•15(-15dB), ER•15 SP(-15dB*) and ER•25(-25dB).

Etymotic ER 25 dB clear replacement filter for Etymotic Musicians Earplugs™ high-fideltiy hearing protection.