5881 single ended poweramp (powered with 12V SMPS)

[bepone]

Oh interesting. All I knew was that SE should be okay at near max dissipation, and never considered lowering it..
I might try lowering the dissipation to 70~80% and see how it sounds. I guess it shouldn't sound that different, while definitely better for tube life. Thanks

you will get reduced temperature on the tube and extended life , also some people put fan from below to blow in the glass to keep temperature lower