Dr. Scientist Spectrum Analyzer

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Displays dynamic signal split into 7 frequency bands displayed on vintage bar graph LED readout
MFR# Spectrum Analyzer Green LED
Dr. Scientist Spectrum Analyzer
Dr. Scientist Spectrum Analyzer video
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The Dr. Scientist Spectrum Analyzer is a device which reads audio information and displays it in seven frequency bands, from 63 Hz to 16 kHz, represented by LEDs. 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. Musicians hungry for information can see their music in realtime, represented by light.


  • Operation: Audio In, Audio Through, TRS 1/8"
  • Power Requirements: 9 V DC @ 250 mA, 2.1 mm plug, center positive
  • Input Impedance: 10 mΩ tap-off 'looking' at audio signal
  • Knobs: Sets the level of the LED display, adjust so display lights all bars
  • Push button Switch on back of box: Chooses between Line Level in put or front panel microphone input
  • Trimpots on back of box adjust the display's idle flicker and brightness

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