You won't find a more exhilarating way to break the boredom! The Sound Wall is a hands-on sensory experience like you've never seen (or heard)! Clients simply touch 8 colored hands in a certain order to make their own music as they develop cause and effect skills. This massive wall of color and sounds impressively stands over 5 feet tall, and features over 128 sound effects/instruments made available on the internal sound module. Every time your group interacts with the Sound Wall, they're virtually guaranteed something fresh each time! Appropriate for children or adults. The unit features a built-in amplifier and two speakers. Operates on low voltage with the included transformer and plugs into a 110v AC outlet. The unit must be wall mounted to ensure stability. (4 mounting brackets included) 4'W x 5" deep x 51"H.