I don’t understand why some digners use 12AX7 to drive any ouput tube in SET amplifier. I also don’t think that 6SN7 is a good driver for 300b.
In my 300b amp 6F6g in triod mode is used as driver.
And it doesn't sound slow at all.
Coincidence Frankenstein 300B amplifier has even more powerful driver than 6F6 and sounds very dynamic and fast.
I read one Russian DIYes forum. One guy tried dozen different driver tubes in 300B amplifier including 2A3, 45, 6F6 and he told the best driver for 300B was 300B, and the legendary Japanese designer Sakuma used 300B driver in his 300B amplifiers.
I think to use 6sn7 driver for big tubes like 300B, 845, 211 it is similar to using 1 liter engine in track.
In my 300b amp 6F6g in triod mode is used as driver.
And it doesn't sound slow at all.
Coincidence Frankenstein 300B amplifier has even more powerful driver than 6F6 and sounds very dynamic and fast.
I read one Russian DIYes forum. One guy tried dozen different driver tubes in 300B amplifier including 2A3, 45, 6F6 and he told the best driver for 300B was 300B, and the legendary Japanese designer Sakuma used 300B driver in his 300B amplifiers.
I think to use 6sn7 driver for big tubes like 300B, 845, 211 it is similar to using 1 liter engine in track.