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This simple circuit will fit in a stomp box size enclosure and is perfect for your pedal board to mix parallel effects. Op amp is a TL072.

The value of R10 can be lowered to increase the overall gain of the mixer.

The photos above show the mixer built in an electrical junction box and also in a 125b enclosure.

• General Build Instructions
• Mini Mixer Bill of Materials Text
• Mini Mixer Schematic
• Mini Mixer Parts Layout and Wiring Diagram
• Mini Mixer Ready-For-Transfer Printed Circuit Board Layout

Would you like a Ready to Solder Circuit Board for this project?

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Here's a link to another pretty cool simple mixer.

• Ultra Simple Line Mixer