Musicians are unique in the world of Audiology. On one hand we must be concerned with and provide musicians with hearing protection. On the other hand, fidelity of music played must be kept intact in order for the musician to be successful. There are two types of hearing protection for musicians (non-electronic and electronic). The non-electronic filters (produced by Etymotic Research) are housed in custom made earmolds. Musicians Earplugs are designed to reproduce the natural response of the open ear canal. Music heard through the ER series of earplugs has the same quality as the original, only slightly quieter which makes listening to loud music safer. The result is that speech and music remain clear. The fidelity of music is kept intact, which is priority #1. Four levels of filters are available in the non-electronic music molds: ER9, ER15, ER15SP, and ER25. The number corresponds with the amount of sound attenuation provided. The ER15SP attenuator is designed for those individuals on the receiving end of music versus the musician themselves.