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tube manufacturing

Hi folks, can someone explain why the so called old new stock tubes are often superior to the tubes made currenly? Is it due to a lower quality standard of manufacturing these days or is it because people are losing skills necessary for tube manufacturing? I wonder: why can't we (with today's high tech manufacturing equipment) just copy those old Telefunkens, Siemens, GE's and Mullards?
dazzdax

Showing 1 response by yioryos

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yioryos
723 posts
 
I honestly believe that the so called NOS and NIB tubes and their "superior audio performance" is all a clever money making tool.To pay 300$ and 400$ for a pair of 6922 made in the sixties is simply crazy.Technology gets better and I don't accept the theory that "we no longer can produce equal or better tubes" .Yes the demand for audio tubes is much lower today .That is true.But companies could still produce a high quality tube and charge for it accordingly.There is certainly a market for tubes.Please view ARC website (one of the highly respected tube audio manufacturer)and read their opinion on NOS tubes.I am into tube equipment as well.
Regards
George
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