Description: Etymotic Research, Inc. (ER) is a research, development and manufacturing company located in Elk Grove Village, Illinois. The name "Etymotic" (pronounced "et-im-OH-tik.") means "true to the ear." Established in 1983, ER's mission is to design high-fidelity products to measure, improve and protect hearing. ER has developed and patented some of the most innovative hearing technology available today. ER's products are used worldwide... read more