This 4-person wireless listening system is ideal for language learning, literacy groups, ELL / ELD applications, story-time, music & audio book listening, other classroom and library uses. With a 100' range from the transmitter to the headphones, the system creates flexible learning environments where the students do not need to be next to the audio source. There are three different color-coded frequencies with matching hardware to choose from, with an unlimited number of headphones that can be added later for larger sized groups. Since each transmitter and its matching color-coded headphones operate on their own independent frequency, three different groups can enjoy wireless learning in the same room without any interference. The transmitter has a 1/4” plug to attach a microphone. When connected, this allows announcements to be made which are heard only by students who are wearing headphones that are receiving from that transmitter. Each system includes four wireless headphones, a matching color-coded VHF transmitter that plugs into any audio source (MP3 player, computer, multimedia player, VCR / CD / DVD player, or television monitor), all necessary charging cables, and an AC adapter.