Plugfones Dynamics High Fidelity Earplugs - BEST IN CLASS Hearing Protection High Fidelity Attenuation Filter with patented comfort plugs. Plugfones Dynamics offers 29 dB reduction and 19 dB attenuation filter reduction. Stay involved in the activities you love while minimizing the harmful effects of hearing loss, ringing in the ears, and noise anxiety. Enjoy being active in noisy work or play environments.