Wire up a pair of headphones and jam to your favorite music! Tune in to technology — with a pair of stereo headphones you engineer yourself! Build the headband, rig up the speaker drivers, and experiment with stereo sound. Explore how speakers and other electroacoustic transducers turn electricity into sound, then learn about the history that made modern headsets possible.
Source: https://www.mastermindtoys.com/products/kiwico-stereo-headphones
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