A Doppelganger Doppelgänger - Building Aion FX's Quadratron

The Lovetone Doppelganger is a four stage optical phaser pedal with a huge number of tone options. Once again, this is currently a very expensive pedal, with examples going on Reverb north of $1000. However, Aion FX offers a version which you can build for a fraction of the cost of the original, though it is a challenging build! As you can see below, the PCB itself is vary large, though it isn't packed as tightly as some other manufacturers' offerings are. As this is a fairly complex build, I'm actually going to go through the process step by step rather than glossing over some of the more gory details.