Tube DIY Asylum

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If that is really what he said then Rosenblit Got This Wrong

Posted by Ralph on June 15, 2021 at 08:41:00:
Your explanation is correct- you don't need unequal currents and they do seesaw. The reason Broskie is correct is simply that the 12AU7 isn't a perfect tube even in its ideal form- it has a fairly low mu. But if you want low gain- such as in a line stage- then you deal with it.

Improving the CCS reduces offsets, distortion, improves bandwidth and increases gain. So its really a good idea to have a good CCS. And they can be so good now that the actual offsets will likely come down to actual tube differences, which is about as good as you can expect. We don't bother with different plate values on this account- in fact we match them.