Jim Thompson wrote:
snip
Uh..!? Tubes from different manufacturers are _massively_ better matched
than any two transistors or ICs from the _same batch_!

Tim

What a pile of nonsense!

I'm afraid it's true. Discrete power transistors vary much more than
tubes of a given type and manufacture run. That's why construction or
repair of high power solid state amps requires either factory-matched
sets or the use of a curve tracer to sort through piles of them.

Of course, the transistors come in N and P channel or NPN and PNP
types whereas tubes are not complementary. So it's apples vs. oranges.

Are apples or oranges better?