Filters/Attenuators

High-Fidelity Sound, Tailored Protection

Unlike foam earplugs that muffle and distort sound, Etymotic filters replicate the ear’s natural response so you can hear every note and nuance clearly. Each filter model (ER9, ER15, and ER25) delivers a different level of sound reduction, allowing you to choose the right protection for your environment, instrument, or listening situation.

Choose Your Filter

1. ER9 Filter – Ideal for vocalists, small string ensembles, and acoustic performers. Provides 9 dB of reduction in the midrange and up to 15 dB in the highs—perfect for lighter, acoustic performances or amplified environments where subtle protection is needed.
2. ER15 Filter – The most popular choice among performing musicians and sound professionals. Offers uniform 15 dB reduction across frequencies for balanced, natural sound. Ideal for orchestras, concert bands, and teachers working in multiple environments.
3. ER25 Filter – Designed for very loud environments such as percussion, brass, marching bands, and amplified concerts. Provides 25 dB of flat attenuation for maximum protection without distortion.

Each filter features a diaphragm and acoustic bore that together create a resonance around 2700 Hz—matching the natural ear response for smooth, accurate sound reduction.

Customizable and Interchangeable

All Etymotic filters fit securely into custom earmolds made from your ear impressions. Swap filters easily to match your activity or performance level. Many musicians keep multiple sets on hand to adapt their hearing protection as needed.

Trusted by Musicians Worldwide

Developed by Etymotic Research—the pioneer of high-fidelity hearing protection—these filters have set the industry standard for musicians, audio professionals, and educators seeking clear, safe sound.

Protect your hearing without compromising your sound.