Fast track video showing the build of an MJ style guitar tube amplifier. I had some NOS tubes laying around, the 6N2P-EB ( datasheet) and 6N6P (datasheet), made in the CCCP in the 70’s.
The 6N2P-EB is direct replacement of the 6AX7 (datasheet) , or with the 12AX7 (datasheet)/ECC83 (datasheet) if we change the filament heaters ( like this). The 6N6P is equivalent to the 12BH7 (datasheet)/ECC99 (datasheet) if we make the same filament heater mod, mentioned before.
The amplifier is inspired in the Tiny Terror, but with a few changes to accommodate different tubes.