The true tube curves

In here, I will file some curves, tested with a computer controlled tube tester, and compare them with original curves.

  • In some cases you will see how painfully correct the original curves are.
  • In other cases, you will see the original curves are faked just to look nicer
  • Or, we publish unknow curves here. Like Telefunken RE404, or RS291 in triode mode.

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