The System80 810 is a 30 HP Eurorack module consisting of a standard subtractive analogue 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 analogue, featuring elements of the System 700, System 100m, and the Jupiter-8. Add some modulation and an envelope generator to create a complete patchable analogue 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, normalised to VCO KYBD CV input)
• VCO output and sub-oscillator normalised 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 normalised to VCF output

• Two CV inputs with selectable exponential or linear response

• Width: 30 HP

• Power: 60 mA +12V, 50 mA −12V

Video: https://youtu.be/XgENzkrM-0I

Product Specs

• Item Number: 18951
• Make: System80
• Model: 810 MK2
• Condition: Brand New
• Finish: Black
• Categories: keyboards-and-synths ⇒ eurorack
• Function: Filter Mixer Oscillator Synth Voice VCA
• Made In: Canada
• MPN: S80-810MK2
• Modular Grid: Eurorack ⓘ ＋
• Dimensions*: 30 HP 30 mm deep
• Power*: 60 mA +12V 50 mA -12V 0 mA 5V

* User contributed details