Regular Price: $206


This product is currently discontinued.

Availability Low Stock

Hungry Robot VCO Analog Oscillator
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The Hungry Robot VCO is an all-analog, low cost, workhorse of a VCO. 

It can output triangle, sawtooth, and square waveforms simultaneously with tremendous bass response. 

The VCO has exceptional 1V/OCT tracking with FM modulation. 

The FM modulation input has a built-in CV attenuator as well as an inversion switch. 

The square wave has PWM with a built-in CV attenuator. 

As with all Hungry Robot "Modular Boxes" the VCO can be powered with a simple 9V DC, Negative Center power supply. 


  • COARSE:  Provides a wide sweep of output frequencies
  • FINE:  Provides a narrow sweep of output frequencies for fine tuning
  • PWM:  Attenuator for the PWM CV input.
  • FM:  Attenuator for the FM CV input


  • INVERT:  Inverts the incoming FM CV input.  Toggle to the right to invert incoming CV


  • 1V/OCT:  Input for 1V/OCT tracking
  • FM:  CV input for Frequency Modulation
  • PWM:  CV input for Pulse Width Modulation
  • TRIANGLE:  Triangle waveform output
  • SAWTOOTH:  Sawtooth waveform output
  • SQUARE:  Square waveform output

Technical Specifications

  • Dimensions: 4.7” x 2.6” x 1.5”
  • Power: 9V DC - Negative Center - 2.1mm Barrel
  • Isolated Supply Preferable

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