According to current surveys there are more than 32 million hearing-impaired in the United States. Of this number about 20% to 22% (about 7 million) own hearing aids and 25 million do not own them. Projections of hard-of-hearing people indicate that the hearing deficient will expand at about 3.2% per year over at least the next 10 years. In addition, speculation exists that these numbers are very conservative since the large-scale use of iPods and other MP3 players will cause a “hearing deficiency” epidemic. The hearing deficient population of the U.S.A. shows a significant peak in distribution that centers on the age groups of 45 to 65 years. This group is largely due to the population bulge caused by the “baby boomers.