Is there any difference between different monthâ€™s models?
I was wondering if a Nec 3500a manufactured in September and a one manufactured in November have any difference in their spec, less noise, faster readings, or other things?
Do they do any fixes or the only real difference is the firmware version they bring?
I think that I saw on nec web site that the reading speed was 12X some time ago, now says 16X.
Since my friend nec (November manufactured) makes much less noise than mine (September manufactured) one?