These devices are not only able to reduce sound amplitude but they are also able to carry out screening between sound frequencies in order to balance them. | |||||||||||||||||||||||||||||||||||||||||||||
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Models, trademarks and patents are registered in forty countries, these include: Italy, Switzerland, European Community (25 countries), Russian Federation, Romania, Ukrain, U.S.A., Japan, India, China, Korea (RPD), Vietnam, Egypt, Iran. | |||||||||||||||||||||||||||||||||||||||||||||
© Ciberphonia™
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