Cool. That reminded me of a very simple tube amp design I had seen that used a light bulb as a current source. http://www.diyaudio.com/forums/diyaudio-com-art

Cool. That reminded me of a very simple tube amp design I had seen that used a light bulb as a current source. http://www.diyaudio.com/forums/diyaudio-com-articles/160464-de-lite-amplifier.html http://www.diyaudio.com/forums/diyaudio-com-articles/160464-...