The ER-20 Hi-Fi Earplugs have a triple flange construction and provide an inexpensive and high-fidelity earplug that can be used in a variety of noisy environments. Used as an inexpensive musician’s earplug, these plugs have principles to allow the user to still hear through an inserted resonator within the stem that allows outside tones such as vocal or musical to be heard. Features: Associated 20dB attenuation Clarity of sound and pitch Good frequency response accuracy Speech is understood more easily in high level noise
