CaviSynth released Subway, a double digital VCO that produces fat basses & LFO but he has a trash sound if you want to lead
A first VCO having four waveforms responds in frequency to 1V / OCT, the second VCO is absolutely identical, but it is possible to choose down to 7 octaves below the first and to vary its frequency to +/- 2 octave. You can turn it into a CV LFO. At – 7 octaves it oscillates so slowly that it becomes a controllable LFO in CV 1V/OCT and CV IN2 in exactly the same way.
With the “CF (CrossFade)” potentiometer it is possible to adjust the crossfade between the two VCOs in order to obtain very thick sounds.
You can choose between five wave formes for each VCO and if you select noise + noise you then have the punk mode (Fig.6) !
The CV2 input (0-5V) is successively assignable to each of the four potentiometers and the two waveform selectors.
Waveforms for booth OSC: SQ, TRI, SAW, SINE, NOISE, SINE SATURATED
See the waveforms table on the Cavisynth Webpage
More info here: CaviSynth | Subway