Here some photos of newly finished single ended 845 mono amps.
Two separate heavy duty umbilicals connect between amp and PSU. One for the filaments and one for the high voltages:
The amplifier in operation:
The filaments are visible through the slotted plates.
Since these are customer amplifiers they will not been shown in Munich, but I have another set finished in different color scheme which will be on demo at the high End show next week:
Come to the High End and visit room F231e to listen to these amplifiers.