I couldn't tell you, Craig.
When I put a tube in an amp, it lasts > 20 years.
trying to tell me you made a "good decision" by purchasing some "spares" that are > 20 years older than the originals is........
BUT, to each his own. To tell someone that actually works on this stuff for a living that you "replaced it with the original OEM parts" is a laughable offense. Anyone that can actually read realizes that Ameritron supplies their 811 amps with American and Offshore tubes, BOTH 811 and 572.
It's OK. When someone smarter than me speaks up, I argue with them. That's the BEST way to get better help. Keeping 811As in your amplifier is like keeping sweep tubes in my SB220. I COULD keep them in it, but why? It might be cheaper THIS time, but over time, it would RAPE my wallet.
You know better though.... Keep correcting others.
Then again, I've NEVER replaced tubes or worked on an 811 or 811H Ameritron with 572s in it. I've probably REBUILT more 811 ampliifers than you've ever RUN, though that has 811A's in it.
--Toll_Free
