The pinnacle of 3 watt class A tube amp design. Simple construction repurposing old electronics into something useful again. I have made many over the years, but never really had a good audio clip. So, here you go, the sound of the 6K6! An overlooked tube, used widely in antique radios. You can build this circuit on the cheap. Your friends will be amazed of the dynamic audio this little guy can produce. e-mail if you would like the schematic.