CV Toolkit is a software that lets you many different virtual modules to control, modulate and sequence your synthesizers via control voltage (CV). These virtual modules can work independently or can bet set to influence and modulate each other via the Routing Matrix.
With CV Toolkit 3, you can create anything from multi-channel rhythmic sequences to complete polyphonic patches.

In order you CV Toolkit with your synth, you'll need a DC-coupled audio interface or an Expert Sleeper's ES-3, ES-4, ES-40, ESX-4CV, and ESX-8CV modules*