0477774ワット発電中さん垢版 | 大砲2023/05/12(金) 21:12:49.48ID:sqP7xFc5 >>458 375のFig.2の前のFig.1が明らかに・・・12AX7・・・・・・! https://i.imgur.com/fLvTCGT.jpg https://www.diyaudio.com/community/threads/dynamic-coupling-matching-driver-to-grid.394306/