@aricaudio fwiw, I followed a long 2-year case study on asian overseas DOA tubes. Went a different route on buying more direct and original packaging. Not buying from the lots removed and repackaged by US distributors or dealers when I can help it. Three quads and three paired sets later, (0) zero failures on arrival.
Knock on wood, two years play time on TJFMs, one year on small PSVanes, hoping the CV181-TIIs hold up too.. Bought the Premium Pairs in the hard cases with foam inserts, direct. Not the flimsy thin boxes, getting repacked and resold in the US. We'll see if the theory pays off here too. Sounding very nice right now, no euphonics. Smoother and less grainy than my very best 60's Sylvania vintage triple hole black pates. We'll see how it goes a year from now after long use.

