This is a simple 3 channel mixer with individual volume control and one output. Runs on a 9 volt battery or 9volt dc power. (battery not included) Uses TL074 ic and has an onboard trimpot for fine level adjustment.

I designed this with the goal of creating a very simple and inexpensive mixer, purely for utility.

Works great for combining simple audio devices. (I use it with some synth gear to feed everything into an audio interface on my laptop).

If audio source going in is too high, some clipping may occur. To prevent this, run lines into the mixer at low volume and connect an amplifier in line with the mixers output.

Buying options:

• just board: comes without components. All other components will have to be sourced by buyer. All components will need to be soldered onto the board.
• kit: comes with all components. Will need to be assembled with a soldering iron
• fully assembled: comes with all components soldered and tested.

Board comes 53mmx43mm. Included parts depend on buying option.