Possibly... but probably not. I can still buy new audio valves from several sources which theoretically were obsolete by the end of the 1960's.
I think stocking up is probably the best plan as I don't want to try to convert my enlarger to take a 500w theatre lighting bulb..... or do I? Perhaps if I fit it with a shutter for 1/125 second exposures on paper!
Steve.



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