Moog modular synthesizer

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The first prototype Moog Modular Synthesizer, designed by Bob Moog was built in 1964 and by 1967 was a commercially available product line. These were walnut cabinets housing Moog 900-series modules.[1]

The 900-series modules modules use S-Trigger and not the more widely used Gate. This drops +5V to 0V when a trigger is sent, the opposite of what’s commonly used in other synths, which raise 0V to a higher voltage.[1][2][3]


  1. ^ a b Vintage Synth Explorer, Moog Modular Synthesizers
  2. ^ Wikipedia:CV/Gate
  3. ^ Gates and Triggers, Mystery Solved

External links