OK, so I really don't wan't this to devolve into anything political, but with the events taking place in Europe and sanctions looming and relations freezing, How will all the tube manufacturers maintain any supply chain for tubes which are nearly all sourced from Russia? Yes there are many that are made in China, but they generally do not have the breadth and quality of those coming from Tung-Sol and other's in Russia. I can see a disruption, at least for awhile. Yes this is incredibly petty with war on the brink, but this is an audio forum and it is a reality, and maybe worth a consideration. I know that (again as petty as it is in the grand scheme, I will be ordering at least one set for my GSi75 and my A50T as they both are close to needing replacement, so it's not paranoid, just prudent.