These earplugs’ open canal shape allows the sound to travel closer to the eardrum before reaching the unique “V” filter. Plus, while many earplugs decrease too many low and high frequencies, the EARasers filter mostly throughout the most damaging range of the ear-canal resonance, and allow more sound to come through in the very low and very high frequencies. This creates a more natural sound with a flat frequency response, all while retaining excellent clarity and keeping the music layering intact.