EC92


All tube operating points below are by no means definitive good sound recipe for your particulate tube project. Lowest THD point is not necessary best sounding one and there is always some variance even in a NOS tube batch from the same manufacturer!  Below information is only useful as a general starting point and is ment to get you in a ballpark when no measurement equipment is available.


Lowest THD operating point spectrum


5mA, -2.36V BIAS, 260 Va

Recommended operating point spectrum


10mA, -1V BIAS, 247 Va

Other operating points


7.5mA, -1.8V BIAS, 264 Va
3mA, -3V BIAS, 260 Va

THD statistics


Traced plate curves


Comment


Very similar to 1/2 12AT7.


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