Used 810 Full-Voice

System 80
$325.00

Excellent sounding combination Oscillator Filter and VCA provide most of a roland inspired synth voice - just add an envelope and lfo!

The System80 810 MK2 is a 30 HP Eurorack module consisting of a high quality subtractive analog synthesizer voice: Voltage Controlled Oscillator (VCO), Voltage Controlled Filter (VCF), and Voltage Controlled Amplifier (VCA).  More than just a clone, the design of each sub-module is inspired by the golden age of Japanese analog.  Add some modulation and an envelope generator to create a complete patchable analog voice with a distinctly vintage character.

VCO

  • Discrete Voltage Controlled Oscillator with temperature compensated exponential converter
  • 1 V/octave tracking over 7-8 octaves
  • Sync input with weak and strong oscillator sync modes
  • 1 V/octave CV input + two attenuated exponential CV inputs for pitch/frequency modulation
  • Six position octave range switch
  • Selectable waveform output: Pulse, Ramp, Triangle, or Sine
  • Pulse Width Modulation CV input
  • Sub-oscillator

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

Specifications:

30 HP
30 mm Depth
Power;     
60 mA +12V
50 mA −12V

Note: This is a used item, and while it is guaranteed to be fully functional it is almost sure to also contain "rack rash" on the mounting holes and have some minor scratches on the panel from use. It will include a ribbon cable, m3 screws, and a box, but not the original box.

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