This is the RAT, one of the most popular distortion effects from the 80´s. It performs very nice high-gain distortion suitable for metal, grunge or rock.

Created by DHEA
Status: Active

PCB assembly Step 3 of 5

For this project, you can use angled potentiometers directly mounted on the PCB. If you can not find the correct value for the angled potentiometers, use other type of potentiomters and solder a wire to the PCB.

You should use a soldering pencil of 15-30W and solder wire of 1 mm diameter. The soldering will release fumes that are harmful to your eyes and lungs, work always in a well-ventilated area.

Warm up the soldering iron and clean the tip with a humid sponge. Heat the PCB pad and the component leg simultaneously and melt 1-3 mm of solder wire on the joint. Finally, cut the remaining of the component legs. Make sure the solder flows properly on both pad and component leg. If the solder has not been applied correctly, you could make a bad connection (cold solder joint). A good connection should cover the joint without touching any adjacent pad.


Place the components on the footprints following the designators. You can place the components on both PCB sides if needed, just keep the correct polarity. It is recommended to solder the components from small to big size: resistors, diodes, capacitors, transistors, potentiometers...