HI-FI Earplug Professional Musician ER-20 Patentd 'Hi-Fi' technology ear plugs(with built-in tuned resonator and acoustic resistor) are designed to allow the wearer to hear naturally and clearly while a portion of the loud noise or sound is attenuated. Whereas the standard ear plugs offer maximum attenuation. Thus these ear plugs are ideal for the musician or music enthusiast. Unlike conventional ear plugs, this technology reduces the volume of the music across all frequencies without distortion or muffling.
