Replacing Tubes and Biasing a Marshall JCM 900

Описание к видео Replacing Tubes and Biasing a Marshall JCM 900

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In this video, I walk through the re-tubing and biasing process of my JCM 900. I am replacing the old EL34s with some KT77s I bought from Eurotubes. I am also using a bias probe I bought from Eurotubes for $25. This is my first time doing this, decided to make a walk through out of it.

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