Pre Assembled 6GV8 stereo amplifier board
I like tubes. I have not fooled much with them lately.
I also like 3D printing, and I am curious to find out whether or not 3D printed chassis are compatible with the heat and weight of vacuum tube stuff.
This pre assembled amplifier board has been in my inventory for a year or so now. I believe it cost about $15 USD or so from AliExpress. When I bought it, I thought it used 6BM8 tubes, of which I have a bunch, but when I traced out the schematic, it apparently uses 6GV8 tubes. I believe I made this mistake because the Russian 6BM8 equivalent is commonly labelled 6F3 by english writers, while the Russian equivalent of 6GV8 is written as 6F5. The Chinese version of 6GV8 must be 6F3, so the Chinese 6F3 is NOT the same as the Russian 6F3.
Anyway, this board uses 6GV8 tubes, a dual triode - pentode combination. It requires 250 VDC for B+, and 6.3 VAC or VDC for the heaters, and output transformers, probably 5K or so on the primary would be fine. I would expect 1 to 1.5 watts output per channel.
The schematic of one channel is attached. I'm not sure if I am going to use this board or not, but is placed here in case it may be of value to someone else.
