Etymotic Research, Inc. is the world leader of In-The-Ear Technology and Hearing Instrumentation
; Etymotic Research (ER) is a research, development and manufacturing company that is located in Elk Grove Village, Ill. The name of the company 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. The company s products...