Sketchy Labs DS-3100 Fully Polyphonic Synthesizer, Part 1: The Beast

After stringing along my followers on Mod Wiggler, I have finally made a video demonstrating the core circuitry of my polyphonic synthesizer project, the DS-3100 -- my homage to the Korg PS-3100, but done in Doc Sketchy style, with PCBs laid out in Excel, fully handmade and based entirely on my own original circuitry. This is a pretty long video, but I hope you enjoy it. Please leave any questions or suggestions in the comments -- I will read and respond to every one.