Retro IN9 RGB Digital Tube Audio Spectrum Analyzer — 40 Full-Color LEDs, 8 Modes, DC5V 1A (USB / Type C)

The Retro IN9 digital tube pairs glass-encased RGB LED bulbs with a CNC processed aluminum alloy base and a dustproof glass cover for an eye-catching desktop accent. It uses 40 full-color LED bulbs and offers 8 display modes with 256 levels of grayscale adjustment to fine-tune the visual output. A built-in microphone provides voice control and music-reactive behavior, with adjustable sensitivity across 5 levels so the display responds to music or ambient sound. Power is supplied via USB or Type C with a DC5V 1A input for simple, reliable operation. Compact and stylish, it serves as both an audio spectrum analyzer and a functional sound level meter.