Sigil is an Analog Envelope and Function Generator in a small format with voltage-controlled Rise and Fall stages. It features a voltage-controlled Cycle button to dynamically transform the Envelope to an LFO as well as a Shape control that morphs both the Rise and Fall slope from exponential to linear to logarithmic, achieving from very snappy to slow slope shapes.

Sigil also includes an End of Cycle Trigger Output, useful to chain subsequent envelopes. Input can work as a Trigger or a Slew Input, depending on the jumper at the back of the module. A handy Attenuverter sets the Output voltage range from -10V to +10V. 

Sigil has been carefully calibrated to deliver musical slopes and packs all the essential features of a Function Generator into just 4hp!