Internal Photo - HD130 (12AX7)

My Hd 130 doesnt have a 12Ax7 tube..what year did they put them in? are they just in the HD130 reverb..

All Music Man amps made between 1974 & 1976 (approximately) had a 12AX7 phase-splitter tube.
These were found to be unreliable in some situations and were replaced by a solid-state circuit in 1977.
You can find more information on this subject in the site archives.
Steve

Here are my two "cousins": a 112-65 restored to factory condition and my newest acquitisition, a 210-65, all stock and all original.../image

OK, I'm obviously not doing something correctly,...how DO I get a couple of jpeg's to load up here???

/image{112-65}