Do the ILM Kings require 1 60V pwr supply or 2? Or is it a different 60V supply from the STM version?
The STM uses one power supply for both channels. Maraschino Monoblocks (DTM, GCM, ILM) have one supply per channel.
We did make a power supply with dual outputs at first. This was for powering two monoblocks with one power supply, but haven't made them like that for several years now.