PCL82 Pentode Part

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

21mA, -22.5V BIAS

Other operating points

30mA, -16V BIAS
 30mA, -12.8V BIAS
40mA, -9.4V BIAS

Traced plate curves


Excellent pentode with a clean spectrum. Should be good for a couple of sweet SE wat’s. Single PCL82 amp anyone? Available for sale.

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