"I have [the Primary Colours] in my main mono chain and have it on whenever I want to fatten up the sound some more. It’s really nice to have another option for coloring tracks and the different sounds are useful. Often though I’ll just put all three on. Using them mostly for guitar and synth tracks but I had them on a violin track last week and it made for a nice scratchy, detailed violin track."

-Ruban Nielson
Unknown Mortal Orchestra

"The Colour system is a fascinating example of what can be done with analogue electronics, and produces some great textures. If you have a 500-series with space for another module or two, this is a no-brainer."

-Mike Hillier
MusicTech.net

"I can't say enough good things about Colour. This product embodies everything Tape Op is about. It's rooted in DIY; it sounds good; and it's inexpensive, novel, fun, and wide open for experimentation. Right on."

-Scott Evans
TapeOp Magazine #107

"...the whole concept and execution works brilliantly: DIYRE’s Colour platform is a great way to add a little analogue character to your setup, or to dip those first tentative toes into the world of DIY."

-Matt Houghton
Sound on Sound Magazine