Keritech Stream - Hot Cathode Edition

It's your weekly bench time again at Keritech, with a deep dive into my vacuum tube tester and some more work on the EL84 single ended amp. Plus some rag chewing as always. Support me on my Patreon page at https://www.patreon.com/KeritechElectronics Instagram - https://www.instagram.com/KeriSzafir Telegram channel - https://t.me/KeritechElectronics