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The ER-15 Replacement Filter is designed for use with Westone's DefendEar Concert (Style 49) Musicians' Earplugs. It's a top choice for musicians and music educators who need quality hearing protection.
The ER-15 Replacement Filter stands out due to its ability to provide a consistent, flat 15 dB of sound reduction across a wide frequency range, from 125 Hz to 8 kHz. This ensures musicians can accurately hear their performances, while also protecting their hearing.
The ER-15 Replacement Filter is ideal for anyone involved in music, whether they're performing in a symphony orchestra, a local rock band, or teaching music in a school setting.
A flat response attenuator, like the ER-15 Replacement Filter, is a device that reduces sound levels evenly across a wide frequency range. This allows for accurate hearing of musical performances while providing protection from potentially damaging sound levels.
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Westone's DefendEar Concert (ES49)

The most popular of the Etymotic Research flat response attenuators, the ER-15 is recommended as the first choice for hearing protection for musicians, whether they perform in the symphony or local rock band or they teach music at school.
Designed for use with the Westone's DefendEar Concert (Style 49) Musicians' Earplugs. Etymotic filters feature a flat frequency response that allows musicians to hear their performance accurately while providing hearing protection. The ER-15 provides a uniform flat 15 dB of sound reduction from 125 Hz through 8 kHz.