Dr. Scientist

DR. SCIENTIST Spectrum Analyzer

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.


  • 7 bright bar graph LEDs to display your audio
  • Available in several different colours
  • Illuminated back plate
  • Pass-through audio only
  • Built-in microphone for room/live sound
  • Comes with power supply and all necessary audio cables
  • Works great with any audio input
  • Sensitivity control for display level
  • Designed and handmade in B.C., Canada


  • Level knob – Sets the level of the LED display, varies with input signal source
  • Pushbutton switch  – Chooses between the Line Level input jacks or the built-in microphone