Newproduction power tubes: Reliablity

@ mozartfan, My new buick encore, is made in (China). This has been the world plan, 50+ years now. HELLO! :-)

jjss49,

"...as mentioned, when a power tube fails there is often secondary damage to associated equipment... "

This is maybe the most precious info that many of us who have been curious, lurking, intrigued, maybe even considering, but having no experience with tubes could find on tubes.

Aside from that, just the other day I read about some Chinese car company that is planning to build a car manufacturing plant in the U.S.A. I forgot details.

EDIT: "Kandi says it is now actively looking to build an electric car factory in North America. And while it’s largely unknown to most Western consumers, Kandi is a big name in China. It’s a joint venture between Kandi Vehicles and one of China’s largest automakers, Geely Group, which in turn is the parent company of Sweden’s Volvo."

All Volvo S90 cars that you see in Europe are Made in China. I think that the same goes for those in the U.S.A.

@glupson

i may have stated that point a bit too strongly... not to be too scary about this -- more appropriately: when a power tube fails, depending on how it fails and depending on the amp, there may be some ancillary damage -- would be a more accurate statement

like everything else, there is a learning curve and knowledge to using tube power amps
-- turn tube bias down when installing fresh tubes, then bias up gradually after 10-15 minutes idling (if the amp is manually biased)
-- be watchful when first powering up, for abnormal/inconsistent glow amongst the tube set (helps to lower the room lighting to see this obviously)
-- listen for any crackling, hissing or anything sounding abnormal at the amp or through the speakers - things may settle down if this appears initially
-- roughly note operating hours on power tube set over time

all the above is less critical (but should still be practiced) if the tubes have been pre-burned and tested by the retailer - good sources do this, sometimes for a small extra charge, it is worth paying for it for peace of mind

different amps have different protection circuits... primaluna among the best in this respect... the famous brand is audio research whose lovely, expensive amps do not have protection circuitry for the output tube, and so some (usually relatively minor) damage can result if a tube blows badly -- very fixable by a tech but still a pain to deal with (thusly, ARC tube amp users learn to be conservative in terms of replacing power tube sets pre-emptively and carefully noting the operating hours)

@ mozartfan, My new buick encore, is made in (China). This has been the world plan, 50+ years now. HELLO! :-)

Not doubting your word,, just had to google that fact,, yep says made in china,, HOWEVER,,not designed in china,, 
What I am saying the chinese can only copy things,, they can not invent ideas, They steal, The Buick is designed in the USA, built by cheap labor and robots in china,, Huge dif from  a  tube designed/built in china and a  tube designed/built in russia, China copies the russians, 
Russia makes the superior 88, which is the only  push lull i consider worth owning. 
The 90 is nice, but no cigar.

Aside from that, just the other day I read about some Chinese car company that is planning to build a car manufacturing plant in the U.S.A. I forgot details.

Well with the Chinese Flu shutting down businesses across the USA, there will be plenty of opportunity for chinese tycoons to come snap up property on the cheap and move operations here, as the USA will soon have a
 huge labor market, ready and willing to work at whatever wages offered.
China is headed downwards, has no future, The USA is the only country that will surive the chinese flu
shut down
So makes sense to buy up cheap properties and move business here.
Cheap labor + shipping + warehouse etc etc = same as making here with cheap USA labor.
I am not interested in any chinese 88 tube, no matter how fancy the labeling.