"Very popular 3 channel color organ causes lights of your choice (up to 200 watts per channel) to flash to the beat and frequency of the music. Simply connect the color organ to your stereo speaker. Has input transformer to isolate color organ from stereoand has 3 different signal filtering stages for low, medium and high notes. Kit features level control and 3 separate AC outlets to connect Christmas lights, lamps, etc. Operates from standard 120VAC. Size of board: 3"" x 5''. Builder should be familiarwith AC safety before building this kit. Complete with all parts, PC board and instructions. Skill Level 2. "