https://www.diyaudio.com/forums/tubes-valves/315889-gu-46-push-pull-single-amplifiers.html
ʂ̃TCgɃWv悤ƂĂ܂BXΏL̃NNbNĂ
UPLIFTōLȂő̌܂傤IKȉ{Ct܂I