it was restored in Sydney by Hutchings Keyboards.
I have a love for all things with valves. There is something special about an electric current running through a sealed glass container.
Modern firms such a Metasonix & Trogotronic are leading the revival in vacuum tube technology applied to music, but it's nice to find something made back in the days before transistors & ICs were around.
Maestrovoxes were built in the United Kingdom by Victor Harold Ward in the 1950s.
They were intended to be bolted under a piano.The pianist could play the piano with the left hand,
the maestrovox with the right (and control its volume with his/her knee).
Some very old Maestrovox valves:
And some pics of the old resistors etc post restoration.