Here's a recurring problem in many churches across the country: Some folks can't hear the sermon or the service due to hearing loss. The Hamilton ALS-600 assistive listening system is an inexpensive solution that allows users to "plug in" to the service literally with a simple receiver and headphone set.
From the owner's manual:
Thank you for purchasing the Wireless RF Personal Listening System. The system can be installed quickly and easily. It provides quality listening assistance in compliance with the American's With Disabilities Act (ADA), which requires public facilities with audio systems to make listening assistance available to their audiences.
The ALS-600 provides outstanding quality. This system operates up to 300 feet line of sight. The system is configured with one wireless transmitter and 6 portable wireless beltpack receivers. The system is configured with one channel in the 72-76 MHz band. The system is expandable to limitless receivers.
This Assistive Listening System is versatile. It can be operated indoors or out without affecting performance. Excellent for any application from small classrooms and boardrooms to auditoriums and sanctuaries. The ALS-600 offers great auditory reception without seating confinements.
The ALS-600 connects to the line out from a tape player or from an existing sound system and broadcasts the audio as an FM radio signal.
For more info and ordering, with FREE shipping, please visit Encore Data Products.

