Not so. A tube amplifier tuned for 1500W output will also be inefficient at lower output power levels. This is the nature of Class AB linear amplifiers, regardless of active device. You can easily measure this yourself!
@@ElecraftChannel I completed testing on my AL811h Efficiency was flat line from 25watts drive to 65 watts of drive a savings of 400watts from low end to top end with same efficiency
Great video, very informative as I shop for my next amplifier.
Proves that solid state is inefficient, tubes efficiency are constant at any drive level
Not so. A tube amplifier tuned for 1500W output will also be inefficient at lower output power levels. This is the nature of Class AB linear amplifiers, regardless of active device. You can easily measure this yourself!
@@ElecraftChannel I completed testing on my AL811h
Efficiency was flat line from 25watts drive to 65 watts of drive a savings of 400watts from low end to top end with same efficiency