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2. Earplug - Wikipedia

   en.wikipedia.org/wiki/Earplug

   Earplug. An earplug is a device that is inserted in the ear canal to protect the user's ears from loud noises, intrusion of water, foreign bodies, dust or excessive wind. Since they reduce the sound volume, earplugs may prevent hearing loss and tinnitus (ringing of the ears), in some cases.

3. Hearing protection device - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_device

   There are many different types of ear plugs. The most commonly known are foam, musician, or custom earplugs that are made from a mold of a person's ear. Helmet, covering various parts of the head, including the ears; In some occasions, multiple types of ear protection can be used together to increase the NRR.

4. Ultimate Ears - Wikipedia

   en.wikipedia.org/wiki/Ultimate_Ears

   Ultimate Ears is an American custom in-ear monitor (IEM), speaker, and earphone manufacturer based in Irvine and Newark, California, United States. The custom in-ear monitor company was founded by Mindy and Jerry Harvey in 1995 and it created a new market for custom IEMs which are now used by most of the world's top musicians. [3] [4]

5. Headphones - Wikipedia

   en.wikipedia.org/wiki/Headphones

   Some in-ear headphones utilize built-in microphones to allow some outside sound to be heard when desired. [42] [43] Generic or custom-fitting ear canal plugs are made from silicone rubber, elastomer, or foam. Such plugs in lower-end devices may be interchangeable, which increases the risk of them falling off and getting lodged in the ear canal.

6. History of hearing aids - Wikipedia

   en.wikipedia.org/wiki/History_of_hearing_aids

   History of hearing aids. Madame de Meuron with ear trumpet. The first hearing aid was created in the 17th century. The movement toward modern hearing aids began with the creation of the telephone, and the first electric hearing aid was created in 1898. By the late 20th century, the digital hearing aid was distributed to the public commercially.

7. Miracle-Ear - Wikipedia

   en.wikipedia.org/wiki/Miracle-Ear

   Miracle-Ear, Inc. is a hearing aid and hearing care company consisting of a network of franchised and corporately owned retail locations. The company is a subsidiary of Amplifon, the worldwide leader in hearing care and hearing aid retail based in Milan, Italy. [1] Miracle-Ear's U.S. headquarters are located in Minneapolis, Minnesota. [2]