Explore the principles of sound. The Digital Recording Lab opens the door to the circuitry of sound. This unique, versatile design lets you build 59 different electronic circuit projects on just one console. You can record sounds and play them back, change your voice to sound like a monster or a robot, set an alarm clock and a security system, even make an electronic parrot repeat what you say. PLUS, the spring coil construction makes wiring the projects simple and safe no tools or soldering required. Step by step directions and diagrams make advanced electronic concepts a snap. Requires 3 AA batteries, not included. Grades 5 and up.