So I really like the sound of the Super 58s on my father's AR420, and I want to get a pair for myself, but in doing some research, I see that there is a lot of debate over the specs and whether the Chinese or Korean made versions are the same or not. Some say they actually use Ceramic magnets and others argue about which number Alnico they are. Can you clear this up?
I wish I could. Unfortunately Ibanez has never provided much detailed information on their in-house pickups.
I agree that the Chinese, Korean and Japanese versions are very likely to be different, but I don't know any details of the differences. I also believe that it's very likely that the specs have changed over time even within the same country of origin.
If you happen to find a source that has any solid information about these pickups, I'd love it if you'd share it.