My homemade LED lights run off of 170 volts DC. (rectified house current here in the United States). I would like to modify one of these dimmers to handle that kind of voltage. I've torn down one I got from wish.com, it looks like the mosfets are connected to the signal, output, and power supply. It looks like you could parallel on some heftier mosfets with a bigger power supply to do the same job at higher voltage. Why 170 volts? several reasons, I'm in a traveling band, like to be able to load in and out easy. The higher the voltage, the lower the amperage therefore, the lighter the cords you can use and less to carry in and out, and very light power supply with a half wave rectifier so I can keep part of the light show at neutral potential. I've got photos and specs of my RGB amplifier if you're interested. Thanks for the interesting article, Marty Lee

Thanks for the Teardown. I ordered a similar one and saw 2 things, that are missing on your wiring, but also seem to be present on your board.

1. The Input (R) is actually pulled up to 12V with a 100k resistor. That makes sense, as the switches for strips are open-drain and you could otherwise have an undefined state, if connecting this amplifier directly to an open-drain controller.
2. V+ is connected to 12V via a 1K resistor. I am unsure regarding the reason for this. I might be to limit the inrush current to the mosfet gates with a single resistor instead of 3.