PCH200 Triode 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

10mA, -1.75V BIAS, 170Va

Recommended operating point spectrum

5mA, -4.5V BIAS, 260Va

Other operating points

7.5mA, -3.2V BIAS, 220Va
2.5mA, -5.5V BIAS, 260Va

Traced plate curves

THD statistics


Clean spectrum but H2 levels are quite high. Available for sale.

Copyright © 2022 MV Audio Labs. Legal Disclaimer.