Two boards by Jan Didden, two CNC Al plates, MD312/MD212 dc-dc converters, many parts - $150 obo
https://www.diyaudio.com/community/threads/winfields-100w-dc-10mhz-1000v-us-amplifier.287023/
https://www.diyaudio.com/community/threads/winfields-100w-dc-10mhz-1000v-us-amplifier.287023/