Best Vacuum tube for Bellari VP129

I've currently got a Ruby 12AX7A tube in, but wondered if there was one that would improve performance noticeably?

bdogsquad11-26-2009 4:18pm

riley804 Details Discussions Posts This discussion 1,224 posts 11-28-2009 at 12:20am Copy Comment URL Report Comment Edit Delete Maybe do some reading in the forums or check out some info that was sent to you regarding other resources for tubes.