[Feel free to ask Myles]

I found some old EL34s I pulled from a 70s Traynor head some years ago. Nothing on the glass just EL34M (could be an H, hard to read) in white on the black bases. Looks like tehy the Mullard V shaped metal at the top with square getters. Any idea who made these?

[Feel free to ask Myles]

Hi Myles,

I'm puttin new SED EL-34s in my Bogner Shiva. What would be your recommendation for bias point? I wonder if the higher voltage requires anything different. Any pre amp tubes I should use?