@catcher10
1. As for a warranty on a cartridge, I think if it looks right and sounds right from the get-go you’re good to go for the duration. Given proper treatment I’ve never seen a cartridge fail. Have you?
2. The last cartridge that I bought from Japan directly had a defect that was visible. I found the Japanese merchant (EIFL) extremely helpful and an exchange was effected very quickly. Ebay offers additional confidence, as does purchase by credit card. I have bought other, non-audio, items directly from Japan and find their business ethics quite high.
3. If you look at the AT USA site you will not find the Art-9. That suggests to me that the model is not distributed in the US except as a grey market item. If I am correct, AT USA is free not to honor the warranty even though purchased from a US dealer. If presented to AT USA they could either fix it, fix it for a fee or not fix it. It can always be sent to Japan for repair--not such a big deal these days.
4. In any event, if anything goes very wrong, and for retipping, you still have Soundsmith.