"Brian Gaff" wrote in message
news

Its purely because of mass production of course. once the main
factories making valves got below a certain number prices
started going up, and vice versa for semiconductors of course.
I think one has to be careful if buying the Chinese copies of
valves around at the current time, as quality control is almost
non existent, though some Russian ones are made a lot better
I'm told.
Brian
Not just then, try now! The only source for most valves for audio
amps is Chinese with some Russian hanging around in the
background. The Chinese ones are something over £25 a pop for
KT66 or KT88, but I saw some Russian ones a few months back that
went on eBay ( think it was) for the thick end of a ton apiece.
--
Woody
harrogate three at ntlworld dot com