Frap Tools 411

The 411 is a quadruple linear VCA, mixer, and multiple for audio and CV.

It consists of four linear VCAs with semi-normalled inputs and CV inputs, −6 dB attenuation switches, a mixed output, and an unpatched output.

The 411’s architecture allows to use it in many ways, for example:
processing four signals independently;
modulating one signal with four CVS and sending it to four different destinations;
mixing up to four signals and modulating them with the same CV;
mixing two audio signals and modulating them with a modulated CV…