HEARING HELPER TGS System with 10 Receivers, no headphones, 72-76 MHz. The Hearing Helper Tour Guide System from Williams Sound helps tour group members with hearing difficulties overcome background noise and distance from the guide - even in noisy surroundings. Use it in factories, museums, power plants, zoos, theme parks, tourist attractions, bus tours, or walking tours - anywhere hearing assistance is required for tour-type presentations. The Hearing Helper Tour Guide System saves the tour guide's voice, listeners don't miss the message, and the presentation doesn't disturb others. It also fulfills the Americans with Disabilities Act (ADA) accessibility requirements for hearing assistance. Your tour guide wears a compact, body-pack transmitter and headset microphone. Listeners use portable receivers and lightweight headphones to hear every word clearly and easily, even in the back of the group. Note that headsets are sold separately.