ER20 HIFI Filtering Earplugs

The ER-20 Hi-Fi earplugs have a triple flange construction and provide an inexpensive, "high-fidelity" earplug that can be used in a variety of noisy environments.

Mainly used as an inexpensive Musician's Earplug, these plugs have principles to allow the user to still hear through a inserted resonator within the stem that allows outside tones such as vocal or musicial to be heard.

• Low cost
• Associated 20dB attenuation
• Clarity of sound and pitch
• Good frequency response accuracy
• Speech is understood more easily in high level noise
• Available in a variety of colors

The ER-20s are DIFFERENT than conventional earplugs. They actually reduce the dangerous sound level evenly (using a tuned resonator and acoustic resistor) to preserve the balance. You still hear the blend clearly, "feel" the bass, and are able to distinguish each tone.

Here is a list of several people who benefit from the ER-20 earplugs...

• Aircraft - crews, passengers, pilots
• Athletics - athletes, coaches, spectators
• Construction - carpenters, equipment operators, steel workers
• Emergency Vehicles - EMT's, highway patrol, firefighters
• Industrial - factory workers, students, supervisors
• Leisure - concerts, night clubs, noisy restaurants, sporting events
• Medical - Dental - dentists, hygienists, technicians, surgeons
• Drivers of - heavy equipment, motorcycles, race cars, pit crews
• Musicians - vocalists, musicians, directors

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