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RE: 2a3 and 300b

"Isn't the spacing between -40 and -80 a little bloated with the space between -40 and -60 wider than most and the spacing between -60 and -80 the widest of all?"

Is that an artifact of the plotter, the test, or the tube?

Sure we can measure these 75 year old plate curves with a micrometer to find minor annomalies. The fact remains that the 300B along with other triodes designed in the 1930s are extremely linear. To assert that the 2A3 is more linear than the 300B is just polemics. I use the 2A3 because I don't need the power, but if I were to need a good clean 8W I would build with the 300B.


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