Etymotic ER125-MP9-15BN MusicPRO Electronic Earplugs for MusiciansThe MP9 15 MusicPRO Electronic Earplugs for Musicians from Etymotic Research offer professional grade hearing protection for performers, music educators, front of house crews, concert security personnel, audiences and others. The earplugs provide either 9 or 15 dB of protection, and feature ready fit eartips that can be worn without the need of having custom molds of your ears made. The MP9 15 MusicPRO earplugs feature "Adaptive Noise Reduction"