The Paperface Dual Mixer (Slim) is a simple 4 x 2 channel mixer that offers 3 attenuated inputs and 1 single unity gain input per-section. With the option of having 1/4", 3.5mm and banana outputs, or both (depending on how you build the module) allows some great feedback patching options.
DIY BUILD
Follow the General Build Guide for this module. Requires no setup or calibration.
*Inspired by Serge Modular Music Systems*