Re-Tales #22: Is it time for a tube surge?

In last month’s Re-Tales, I discussed what was happening on the vacuum-tube landscape, especially tube shortages resulting from Russia’s war on Ukraine and its consequences for trade. Tube availability is, of course, a small concern compared to continuing Russian atrocities and the resulting suffering of Ukrainians. Still, it’s a question tubed-electronics lovers and makers must grapple with, and we’re a hi-fi magazine. So: If that Russian tube supply is curtailed or boycotted, what are the alternatives for manufacturers and individual buyers?