Softube Intellijel Rubicon for Modular • PluginFox

Softube Intellijel Rubicon for Modular

VCO Module for Softube Modular

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  • Regular price $45.00

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The thru-zero frequency modulation of Rubicon is ideal for experimenting with FM synthesis. Rubicon is an analogue VCO design masterpiece, originally created by Dave Dixon with Intellijel. It is a unique Eurorack module, now offered as an add-on module for Modular.

The Rubicon is an analogue triangle core VCO that is capable of thru-zero frequency modulation. It is a feature packed VCO with multiple simultaneous waveform outputs, including waves that are multiples or divisions of the base frequency.


  • High-precision emulated Triangle core
  • Switchable linear and (for the first time in any module) exponential TZFM (through-zero FM)
  • Linear index VCA for dynamic control of TZFM depth
  • Symmetry control (full clockwise is normal, full counter-clockwise gives reversed waveforms, centred the VCO is at 0 Hz) with CV
  • 12 primary waveform types: sine, sigmoid, double sigmoid, triangle, saw, double saw, zigzag, square, pulse (centre modulated), pulse (edge modulated), double pulse
  • Suboctave circuit with -1 and -2 octaves. The sub octave output is affected by FM just like the main signals
  • Soft sync (also known as reversing sync) with attenuator
  • Hard sync with selectable reset direction (determines if the triangle starts moving up or down after a reset, very useful in LFO mode)
  • Pulse-width modulation and exponential FM with dedicated attenuators
  • Requires Modular