Valve Tuning Stereo VU Meters, Review and Instructions, 6E2 Magic Eye, Diagram Graphic Equalizer

How do these old Green 6E2 Tuning Valves act as a HiFi VU meter.
As there was limited wiring diagrams for this ready built kit available from Aliexpress, eBay, etc
I wanted to maybe help some people who had this or thinking of getting it, what is actually involved and bring to your attention that there is some high voltages ( 250 volts DC ) passing through the circuit. Even though this is powered by 12 volts.
If you are unsure then be careful as you could do more damaged than good

Видео Valve Tuning Stereo VU Meters, Review and Instructions, 6E2 Magic Eye, Diagram Graphic Equalizer канала Michael Yates