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In Reply to: RE: experience with tube vendors posted by 2121@comcast.net on September 01, 2016 at 12:42:09
I would also encorage you to do a bit of home work as you venture into this realm of audiophilia...
Know the parts of the tubes (internal)
NOS - New Old Stock - yes there are Amprex Bugle Boy tubes that have never been removed from their original Packaging, however there are not Thousands of these tubes ...
It is 2016 - most of the tubes that are newly manufactured are being manufactured in either the Former Yugoslavia, Hungary, China or Russia.
Most of the UK, Dutch, German and US manufacturing stopped in the 1970s or before...
Tubes - unused - have an indefinite shelf life.
Tubes can not be repaired...
Have fun
Happy Listening
Follow Ups:
When vendors post on their websites promises that they "test" tubes, I imagine that the reputable ones provide documentation of those tests so that upon receipt any quality-based sales claims could be independently verified?
Testing is interesting-
if the tester/vendor is using an old Hickok or other commercial tester- they were not equipped with printers to print out the results....
The only Vendor that I am aware of that provides Data is RAM Labs - where they have a computer operated testing platform for the common (Twin Triodes and Power Tubes) to run through a series of tests and record the data. RAM then uses that data to grade and match tubes.
So your request is reasonable- but not many people do it-
Happy Listening
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