Buy Boards and Parts:
The Millett Hybrid Maxed
Thermal Imaging and description provided by Robert Davis (Vixr):
"This is driving HD-600s, DB set at 110mV, tube heaters at 13.5V, PS set at 27V. The last image was taken at about 15 minutes with the amp switched on."
Device is a seaFLIRII C InfraRed Imager.