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A hearing disorder or hearing deficiency is a total or minor reduction in the ability to perceive or recognise sounds. Hearing loss can happen to any organism that interprets sound because of a broad range of biological and environmental conditions.This Sound Amplifier allows people with hearing impairment issues to hear sound and voice like normal people. It is a good choice to use this hearing aid because you can feel free to adjust the volume whenever you are watching plays and TV, seeing films,attending a meeting or having a lesson.Regulation of low-frequency noise Form ideal for gradient type hearing loss output frequency response, a wide range of accuracy and effective sound control, and the ability to go outside all sorts of noise. The transparent ear hook delivers a high level of amplification, making it ideal for people with severe hearing loss.The voice being able to be amplified, the hearing aid is well used in the entertainment places.