Dr. Scientist Spectrum Analyzer

Used Dr. Scientist seven channel spectrum analyzer. Tested and in good working condition. Includes 2 1/8" to 1/4" adapters, stereo 1/8" to RCA adapter, instructions, and box. Sorry, no power supply.

From manufacturer:

The Spectrum Analyzer is a visual device which reads audio information and displays it in 7 frequency bands, from 63Hz to 16kHz, represented by classic LED Bar Graphs. It reads information from any source that can be plugged into it—a computer, a guitar, a synth, a cellphone—or it can read the sound around it through a built-in microphone. Like all Dr. Scientist pedals, the Spectrum Analyzer can be used with guitar, bass, synths, and many other instruments.