Intellijel Rubicon II is an oscillator module for modules Synthesizer in Eurorack format. Already the predecessor was a full success, because it was one of the first VCOs to master Thru-Zero-FM synthesis. It Rubicon II now offers nine simultaneously available waveshape outputs, two suboscillators, three variations of a sine wave, a new tri-state pulse circuit, exponential and linear FM, hard and soft (flip) sync, pulse width modulation, CV control of the FM index, a new foldable warp circuit, and the ability to perform perfectly balanced thru-zero FM. Thru Zero FM does not change pitch or tracking accuracy.