GU50 SE amplifier schematic
6N13S PP amplifier schematic
The schematic is Borbely tube amplifier with 6C33C published by him.You can search with google for it.
6P3S SE amplifier schematic 6P3S SE smps schematic BOM of smps Clicking on this link will download the file lista_piese_smps.txt
6P3S PP amplifier schematic