Hello
This is a simple and low cost valve amplifier schematic. I tested this schematic with a Hammond 1650HA OPT. Sound quality is very good, delivers about 20watts. These valve are very easy to get from Russia and most other countries.
I used a solid state rectifier and a 3H choke the voltage can be with in 360 to 400 DC. The phase splitter with the transistor current source perform very stable not much to worry about. First stage tube 6j1p should be mounted on a shielded socket. Have fun
Regards
Amila
This is a simple and low cost valve amplifier schematic. I tested this schematic with a Hammond 1650HA OPT. Sound quality is very good, delivers about 20watts. These valve are very easy to get from Russia and most other countries.
I used a solid state rectifier and a 3H choke the voltage can be with in 360 to 400 DC. The phase splitter with the transistor current source perform very stable not much to worry about. First stage tube 6j1p should be mounted on a shielded socket. Have fun
Regards
Amila