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This Post Has Been Edited by the Author
In Reply to: RE: I'm building something with a 4p1l filament bias driver posted by FlyCast on February 11, 2016 at 05:24:14
The problem with a 300b is that it's a low gain tube. Hence people resort to using IDHT drivers, so you lose the all-DHT sound. Personally I'm not willing to use IDHTs - for me they subtly veil the sound and lack that DHT see-through transparency.
So my solution would be to use an output tube with at least a gain of 10. With a 4P1L driver this gives you a 2-stage amp that works with speakers of moderate sensitivity. Not necessarily horns - full-range units like Alpairs or Fostex or Lowther work okay.
Out put stage doesn't have to be 4P1L - could be another higher gain tube like PX25, 813, 211, 801.
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