The 8 individual volume controls are made of rugged ABS plastic housing and sliver plated, moisture resistant contacts to prevent crackling in the audio. Offers a permanently attached 5 foot cord with 1/4 inch phone and 3-1/2 millimeter mini plugs that connect to any audio source. Built with rubber feet so the unit will not scratch the desktop.

Manufactured with durable shatter-proof polyethylene enclosures and high quality components Silver-plated contact points for a solid connection and moisture resistance The cord with 1/4 inch and 3-1/2 millimeter plugs attach to all media players Strain-relief connectors ensure they won't be pulled out, even in the roughest school conditions Can be used for group activities, lesson plans, and other educational needs