I haven't been able to find much about this. As far as I know the newer versions are slightly more efficient but that's based on only one thread I've been able to find stating differences between v1, certified, vs v2 which is bronze certified.
Also, how would I be able to identify between each version?
EDIT: I"m looking at the cx500, I can't tell if the local shops are selling the older versions or not.
Also, how would I be able to identify between each version?
EDIT: I"m looking at the cx500, I can't tell if the local shops are selling the older versions or not.