DOA Colour Assembly Guide

Safety Precautions, Warranty, and Disclaimer Improper soldering and handling of electricity can cause serious injury and damage to your property. Read and understand the instructions below before beginning your project. Follow the instructions, build carefully, and use the appropriate tools. Build at your own risk. DIY Recording Equipment, LLC is not responsible for any damage or injury resulting from the assembly or use of your kit. You are the manufacturer of your kit. It is your responsibility to turn this group of parts into a working piece of recording equipment. DIY Recording Equipment, LLC does not guarantee the success of your project and disclaims any Implied Warranty of Merchantability. Please visit the support forum for assembly support.
Damaged or Missing Parts All kits and parts are checked before being shipped to you. If something arrives damaged or if your kit is missing a part, please open a support ticket to inquire about a replacement. Missing parts will be replaced at our expense. Damaged parts should be returned for verification. If the part shows signs of use beyond what was necessary to determine that it was damaged, DIY Recording Equipment, LLC reserves the right not to replace the part.

Print this guide.

Thank you for purchasing a DOA Colour kit! Depending on your level of experience, you should be able to turn the pile of parts in front of you into a working piece of recording gear in about 30 minutes.

If this is your first DIY project ever, we recommend reading our Getting Started Guide before, well, getting started.

If you have any questions please don't hesitate to contact us for support.

Table of Contents:

Prepare for Assembly

Required Tools

All that's required to build the DOA Colour is a soldering iron, solder, and wire clippers.

Sort Resistors

Open bags 1 and 4 and sort the resistors by their values, bending their leads at the body as you go. You can sort resistors using a multi-meter or their color code.

Bag 4 contains two alternate resistors for lower gain, which in turn means less saturation and distortion. If you prefer your DOA Colour to be more aggressive, use only the resistors in bag 1. If you want the DOA Colour to be more subtle, use the resistors in bag 4 for R7 and R9.

Note: Depending on when you bought your DOA Colour kit, it may not have come with bag 4. If you'd like to request these resistors, please contact us.

Populate Resistors and Capacitors

Place Resistors

Place the resistors in their respective places on the PCB.

Bend Resistors

As you insert each resistor, bend its leads against the bottom of the PCB to keep it in place.

Solder and Trim Resistors

Now solder the resistors to the PCB. Observe good soldering technique: heat the pad and lead for 2-3 seconds, apply a small bit of solder, and continue to heat the pad for another 2-3 seconds.

Once all of the solder joints have cooled, use your clippers to trim away the excess leads. Your goal should be to clip as close as possible to the joint without clipping the joint itself.

Place Capacitors

Open bag 2 and place the capacitors on the PCB. All of the capacitors are bipolar (can be inserted in either direction), except for C1 and C2. Make sure to place the longer leads of C1 and C2 into the square pads near the "+" marking as shown.

Solder and trim the capacitors as you did with the resistors.

Part # Value Markings Polarized?
C1, C2 100uF "100uF 25V," black Yes
C3 10uF "10uF 25v," black No
C4, C5 100pF "BC 101," yellow No
C6 470uF "470uF 10V," blue No

Assemble Connectors

Insert Standoffs

Open bag 3 and pop the standoffs into the four mounting holes from the bottom of the PCB. Insert the locking ends with right-angle tabs into the PCB and leave the removable ends to be inserted into your Palette.

Place Sockets on DOA

The DOA sockets are a bit tricky to install, because they're inserted through the top, but soldered from the bottom. The best workaround for this is to place the sockets on the pins of a DOA before placing them in the DOA Colour PCB.

Place the six sockets (your kit should contain one extra) lightly on the pins of any DOA. There's no need to press them all the way down onto the pin.

Place PCB Over Sockets

Now place the DOA Colour PCB over the sockets so that the sockets protrude through the bottom of the PCB. Adjust the positioning of the DOA and PCB until all of the sockets are flush with the top of the DOA Colour PCB.

Solder Sockets

Solder the sockets to the DOA Colour PCB and remove the DOA.

Solder Header

Finally, insert the 8-pin header into the holes marked "CON1." Make sure to place the short, silver pins through the PCB so that the black posts and long, gold pins protrude from the bottom of the PCB. Solder the header to the PCB.


Congrats! You've finished building the DOA Colour kit. Now go plug in your favorite DOA and start Colouring. If you had any trouble with your build, we welcome you to contact us via the Support Page.