Addressable LEDs, often in the form of rings, have brought color to a myriad of maker projects. The sound-reactive lamp by MAT uses two such light-circles to make a unique and luminescent work of art. It’s vaguely reminiscent of a desk clock with two light-up faces, which respond to sound in one of 5 patterns via a microphone at the center of each ring. Patterns are selectable via an interface on the back, with the fifth pattern lighting up as a spectrum analyzer according to sound received in the 20Hz to 2kHz range. The device ships with a 2 meter micro USB cable, though you’ll need to provide a suitable power source that can handle 1 Amp.
The 3D-printed housing, which is available in 3 colors is unique, and makes a nice integrated display piece. The two rings are also available separately in this listing. That page has quite a bit more info on the actual electronics of the build, and in that setup you can choose between ‘traditional’ WS2812B LEDs, or WS2812C LEDs, which consume much less current than the B flavor at maximum brightness. The tradeoff is that the -C version is a third of the brightness of the -B LEDs. The Pilot ships with WS2812B LEDs.
Whichever way works best for your application, LEDs and sound reactivity seem to go hand-in hand. The Pilot might make a nice compliment to your component stereo system, while the individual ring version looks perfectly suited to wearable applications and the like.