Результаты полнотекстового поиска:
- 6П21С
- } ==== Полезные ссылки ==== https://sites.google.com/site/severnyjpriboj/Home/httpsitesgooglecomsitese... -se-6p21s\\ https://lampovijzvuksemenkov.blogspot.com/2016/02/621.html\\ http://www.bartola.co.uk/valve... силителе сделаны по схеме\\ https://sites.google.com/site/severnyjpriboj/httpsitesgooglecomsiteseverny... irty experiment.\\ \\ Andy\\ https://www.diyaudio.com/forums/tubes-valves/184771-6p21s-6n21c-tube-true-