- 1 ADSR generator for these filters with an external output for use with more filterbanks or modular systems, triggered by the incoming signal, by a second sounds source, or by a gate.
- 1 FM input for the filters, internal or external audio, LFO or CV.
- 1 VCA overdrive with AR generator.
- 1 ring modulator input, internal or external audio, LFO or CV.
*with the DoubleRack version you got 2 extra LFO outputs