The upper part of the module is, like stated before, is a very precise curve converter for generating an utterly clean sine wave from a triangle wave.
The bottom part is a circuit for crossfading between two input signals to one output. This can happen manually with the CF control as well as voltage controlled via the scaleable CV input.
Both inputs are equipped with LEDs displaying signal levels. The A input is normalized to the sine converters' output.
converter: triangle input, sine output
crossfader: A input, B input, CV input, signal output
3U Eurorack module, 4HP wide, 35mm deep
current draw: 30mA at +12V and 30mA at -12V