Figuring out the GEM Gemini amp circuit

I wrote this back in 2023 and never posted it. Not sure why. I have a few 60s GEM organs in various states of disrepair. One thing that usually helps to sort them out is to replace any electrolytic capacitors that are bulging or leaking, usually around the power and amplifier circuits. I’ve done this a few times, and started to get curious about how the amplifier circuit actually works. It’s a…