Expanding classroom and library technologies are creating new ways for individuals and smaller groups of differentiated learners to listen to content, lessons, and stories. Now also including tablets, computers and smartphones as possible audio sources, the key to best distributing the sound to connected headphones is the jackbox. The stereo JB310 jackbox accommodates up to ten headphones with today's more popular 3.5mm plug. It has silver-plated contact points for a solid connection and moisture resistance, individual volume controls, rugged ABS plastic housing for durability, 1/4" and 3.5mm plugs to connect to a variety of audio sources.