Grades 4 and up. The Digital Recording Lab opens the door to the circuitry of sound. This unique, versatile design lets students 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. The spring coil construction means no tools or soldering required. Step-by-step directions and diagrams make advanced electronic concepts a snap!