Hi Evan,
This is my take of QDX class D amplifier as an experiment. I am using FDT86256 mosfets instead of BS170. The driver is different than QDX. As I said it is just an experiment board. It is not open source yet as WIP.
Flir image is just to give a rough idea of binocular heat distribution.?
73
Barb WB2CBA
Barb WB2CBA