Quote:
Originally Posted by
ljokerl 
That looks like the Fischer SBA-03 (I think that's the right number), which was said to be a dual driver but then turned out to be a single when someone tore it apart. You may want to ask the manufacturer if that really is a dual BA.
Hmm now that you mentioned it, it does seem to look similar to the Fischer SBA-03.
However, on this site
http://treoo.com/store/nakamichi-nce-750ba-in-ear-earphone.html
I asked them and they say it is a dual balanced armature.
Also, in another forum, I asked about this IEM and whether it is a dual balanced armature, one person replied me this
Quote:
I guess it's coming from the same OEM as FA's dba-04.
Both should sound very similar
dba-04 uses knowles 30262 BA which is a single unit with dual receiver/ termination.
Though not physically two seperate BAs, but they consider it as a dual BA.
below are some pics with courtesy from erji.
Second pic shows housing ripped apart to expose BA

I am not sure whether this is true or not so wanted to clarify here.