How have you found using the A10 in Japanese? Any issues? Does it work with the app on the phone?
Umfortunately it isn't able to recognise both of my mics only the left one for some reason so I can't help you. I do have a simliar sort of problem with my UK one, one chaneel picks up slitghly less than the other one. I have seen a few comments around of others haviing similar problems.
My setup is AKG CK61 > nbob actives > babynbox >
I have discussed it with Nick Carbone but we have never resolved the matter.