Toshiba 6GB8, which was used as a PA amplifier at the 1964 Tokyo Olympics and the 1970 Osaka Expo. It was made 50 years ago by looking at an article on a rudimentary radio in 1972 when I was a high school student. There was a nostalgic sound. An amp made to listen to Mari Amachi’s records. Memories of sweet and sour failures will be revived.
![Tube amplifier made in a rudimentary radio article 50 years ago[6G-B8PP3 connection]](https://www.jp2021.com/wp-content/uploads/2022/01/1641768303_maxresdefault-1170x658.jpg)
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