N.B. As these are a UNIVERSAL fitting, that do not require an impression to be taken, they are a physical product and available in store, ready to go straight out of the box
Conventional foam and wax plugs generally produce 10 - 20 dB of extra high end reduction than in mid and low frequencies. This bias distorts the sound and disrupts the fidelity making voices and music sound unclear and unnatural.
The ACS ER20™ is a cost effective, ready to use, one-size-fits-all earplug that closely replicates the ear's natural frequency response. The earplugs reduce sound levels by 16dB while minimizing high frequency roll-off providing high fidelity hearing protection for musicians and users in clubs and concert arenas.
The goal of the ER20™ design was the same as for Musicians Earplugs: to reduce noise but preserve sound quality; in effect, to turn down the noise but not muffle voices, environmental sounds or music
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