What equipment uses 6267 Tubes

I have several NOS 6267 tubes. I have no idea what they are used in. Heck getting old. Any help would be appreciated.
Thanks
Jack

cactusjack04-26-2009 2:42pm

commcat Details Discussions Posts This discussion Message User 79 posts 04-26-2009 at 04:04pm Copy Comment URL Report Comment Edit Delete They are used in Neumann Microphones and many guitar amplifiers, also known as EF86.