The Equalizer Case, An iPhone Case With a Fake Graphic Equalizer That Lights Up Based on Ambient Sound
The Equalizer Case is an iPhone 5/5s case distributed by ThinkGeek that features a dozen rows of colored lights that respond to ambient sound, mimicking the appearance of a graphic equalizer. As ThinkGeek notes, the lights aren’t technically a graphic equalizer in the truest sense, but the effect should be enough to fool the casual passerby.
Okay, so the max amount on each of the bars is preset, and the lights don’t react to specific frequencies, but nobody but you needs to know that. A random passerby would have to watch it for a bit to figure that out.