Let's Make a Mixer

Simple Stereo 4 In, 1 Out Mixer.

Fits into a Eurorack.

Made from mostly spare parts I had flying around. Uses just one dual OpAmp and a bunch of resistors...

Everything is build on two 0.1in proto line raster board. One board is used as a pcb holding the sliders and on the back the circuit. Another proto board makes up the front with slider cutouts and the TRS jacks.

Wiring follows the plan more or less :)