* The music visualizer KS25 spectrum has innovative design and perfect combination of music and art, suitable for both music and electronic enthusiasts, also a delightful art decoration. Please make sure that the audio signal input voltage should be within 5V, or the sound spectrum will be damaged. * 16 segment, golden section ratio design and red, yellow, green, blue, orange, pink 6-color LEDs makes great visual effect; Adopts 32M crystal and 1T microcontroller, the color spectrum has high-speed signal acquisition and accurate reaction. * The spectrum has 8 kinds of classic display modes and 6-level gain setting, they can be set by key, so can the left and right channels, settings with power-off memory; please adjust input volume and gain to make the display amplitude at an appropriate range (default value 3). * 8 kinds of classic display modes: 1. Columnar mode; 2. Columnar with peak holding mode; 3. Columnar with peak, peak upward moving out mode; 4. Mirror mode, from middle to both sides; 5. Single point mode; 6. Peak upward moving out mode; 7. Single peak mode; 8. Mute with all lights on mode(available for testing LED). * Key Operation: Short press the key to switch among eight kinds of classic display modes; long press the key for 1 second to adjust among 6-level gains; long press the key for 3 seconds to switch between left and right channels.