DIYing is our enjoying way.
Why not trying produce some smell and smoke with solder iron and build a
6L6 has any build instructions guide for Nelson Pass Amps.
My last try was a Juma's F5 Haed Amp schematic with BJT input scaled to
"Mighty F5 Amp", as he suggested in thread. Juma's Head Amp
Followed by prasi i have redrawed my own board and so on.