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I have never tried OTL and would like to try a low-power 6C19 PP amp. The best I have come up with is a PP headphone amp
I have found a schematic for a 6C19 SE amp
But the high distortion of the 6C19 makes it unsuitable for SE. I also would like to use just one pair. It means that the already appalling inefficiency will be even more appalling. But the heat rules out more tubes.
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