Egghead's 10-Position Stereo Jack Box makes it easy for multiple students to listen to the same audio lesson at once. Individual volume controls for each headphone output lets students adjust the sound to their specific needs. The six-foot cord has both three-and-a-half millimeter and quarter-inch plugs, which allow you to connect to most media players. Includes 10 three-and-a-half millimeter adapters, so you can use headphones of any plug size.