Thermal test results are in !!
Original KING STM (60V): 5.9W standby, 17.6W idle, 23°C temperature rise during idle
KING STM MK2 (60V): 4.2W standby, 12.0W idle, 17°C temperature rise during idle
We use the "force on" mode (right switch controls power mode) to disable sleep mode for idle power and temperature measurements. This way, we give the STM plenty of time to "warm up", typically half an hour.
Power levels are measured from the AC Line into the 60V 1kW Maraschino power supply.