Musicians and listeners must hear the fidelity of the original sound. This type of moderate protector will have a much lower noise reduction rating than do protectors for maximum attenuation including bass, such as conventional foam insertion plugs, fully sealed custom earmolds or muff type hearing protectors, The duration of exposure also plays an important role. The longer the exposure to loud sound the more likely is there to be damage to the ear.
DOC'S PROPLUGS attenuates about 20dB across the high frequencies from 2000 to 8000 Hz. Rock concerts produce approximately l20dB. The ear tolerates a noise level of 120dB for about 2 hours protected by 20dB attenuation in the high frequencies.