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SYSTEM80 810
$575

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3-in-1 Subtractive Voice Module
810
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Description

The System80 810 is a 30 HP Eurorack module consisting of a standard subtractive analog synthesizer voice: Voltage Controlled Oscillator (VCO), Voltage Controlled Filter (VCF), and Voltage Controlled Amplifier (VCA).  While not strictly a clone, the design of each sub-module is inspired by the golden age of Japanese analog, featuring elements of the System 700, System 100m,  and the Jupiter-8. 

Add some modulation and an envelope generator to create a complete patchable analog voice with a distinctively vintage character.

VCO

  • Discrete Voltage Controlled Oscillator with temperature compensated exponential converter
  • 1 V/octave tracking over 8+ octaves
  • Sync input with weak and strong oscillator sync modes
  • 1 V/octave CV input + two attenuated exponential CV inputs for pitch/frequency modulation
  • Five position octave range switch
  • Selectable waveform output: Pulse, Ramp, Triangle, or Sine
  • Pulse Width Modulation CV input

VCF

  • Cascaded OTA design inspired by classic Roland topologies with selectable 12 or 24 dB response
  • self-oscillating with 1 V/octave tracking (3-4 octaves, normalized to VCO KYBD CV input)
  • VCO output and sub-oscillator normalized to two log attenuated inputs
  • Two frequency CV inputs, one unipolar and one bipolar
  • Voltage controlled resonance

VCA

  • Traditional single OTA design
  • Three log attenuated audio inputs with IN 1 normalized to VCF output
  • Two CV inputs with selectable exponential or linear response

Technical Specifications

WIDTH

30 HP

DEPTH

30 mm

POWER

55 mA +12V
45 mA −12V

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