VelvetGeorge wrote:I love the way your mind works!
The 400V setting is the virtual variac setting. And since the heaters are working normally at 6.3V you could variac the amp down to the typical 90 volt range.
At 30% lower input the B+ would drop to just under 300 volts!
The only issue would be that the preamp voltage would now be so low that you would have very little linear operating range. Resulting in lots of distortion. Whether it's the good kind of distortion is up to you.
Bottom line, yes this would work.
george


**edit...skip that question, i just realized you already answered it in the first post.
