A buddy just told me about this last night, so I had to look into it.
http://www.guitargearheads.com/modules/news/article.php?storyid=1545
I'm uncertain whether you can have a mix-match of tubes running? Or what?
http://www.guitargearheads.com/modules/news/article.php?storyid=1545
I'm uncertain whether you can have a mix-match of tubes running? Or what?