A Vc battery for bias

At your risk. Please take all safety precautions, including the millitary trick of one hand always in the back pocket. The Pleiades DL94 single electron tube power amplifier and almost nothing else except input and output transformer may be tried with fixed bias Vc of -6V. Panayiotis at Disios had the brilliant idea for the Bulgin AA battery holder to use 2 CR 1/2 AA 3V batteries by Varta in series inside the cylinder. 2 Bulgin 4 AA battery holders are being supplied by Fanos for the VB supply (see previous posts). Then one AA battery holder for heater Va. Hopefully with them the amplifier can be constructed to look exactly as the simple schematic, looking physical components from above. Then everything enclosed with see through plexiglass in color?