![Shuguang 12AX7B Preamp Vacuum Tube](http://rubytubes.com/cdn/shop/files/12AX7PREAMPVACUUMTUBE.jpg?v=1715982276&width=1848)
RUBY Tubes
Shuguang 12AX7B Preamp Vacuum Tube
Shuguang 12AX7B is a solid replacement for most 12AX7'S. These are super early versions of 12AX7's out of the Shuguang tube factory, years - 1990's 2010. These will work great in any guitar amp, not many left.