SET Asylum

12B4a driver

74.98.215.28

In Reply to: RE: So many 300B schematics...which one? posted by Audiodyssey on October 03, 2009 at 15:05:00

I wanted exactly what you wanted. So, we went with the 12B4 driver and good output transformers (Magnequest FS-030). The 12B4 is a descendent of the 2a3 and has the voltage swing needed to drive a 300B properly (see archives). I'm no expert but in comparing drivers, this 12B4A specs out nicely. Doesn't have a lot of gain, however. The icing on the cake is that it sounds great also.

There are, of course, many other great tubes to use.

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