Lewis offers different controls that let you shape the LFO. Rate changes the waveforms frequency, Depth defines its amplitude. 16 waveforms split into two banks can be accessed using the bank switch and the waveform selector. Lewis works with most guitar pedals that offer an expression input, but it also works with synths and other devices. Really all it needs is an expression or CV input. Check out our demo video to get a more in-depth look at all of Lewis' functionalities.