Been thinking about brewing up a Champ type amp to tinker with lately but based on what I’d read about the two-stroke decided to put one together. Orderd up a chassis and transformers and got some time to start putting it together this weekend. Added an adjustable NFB and selectable output impedance. Still waiting for the PT and then will have to determine the cathode resistor. Looking forward to finishing it up and getting into a cab with a 12″ Altec 417.