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The general way to tell if you have the external amplified Hi-fi or Logic7 system is if you have front tweeters, and on pre LCi e90s you will have rear door speakers also. You will have the base system which is not amplified externally to the head unit. This has been covered quite a few times in the past and three are some good official BMW docs that have been posted.
Exceptions are Business loudspeaker, which adds front tweeters only... Still not externally amped. There are wattage differences between professional and business headunits, likewise with professional and business Nav units.
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