Two easy answers for you:
- Yes, definitely made in Japan. No way can we find a Chinese factory that can hit the quality needed for this type of bino
- The Aurora encapsulates the Opticron aim to make lighter, brighter, sharper binos as the price increases. So the overall package feels smaller in the hand than the DBA and its optics are a step above too
As always, try to find a place to try them side by side and preferably against some other makers too so you get a fair comparison.
Cheers, Pete