It should be a very “normal” Sun Audio triode amp, which can be operated with 2A3 and also with a 300B as power triodes, as I have built it many times before. But then all came differently! Carsten Bussler had the idea that he would like to use his collection of 2A3H. At this time the power amp was already completely assembled, tuned and played perfectly. Then the new journey with the 2A3H started! It was not so easy to integrate these power triode into the Uchida. More details and pictures can be found on the blog of Carsten Bussler – 2A3 Maniac strikes back