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From the n6's owners manual:
OE DSP AMP: This option is for cars with an original DSP amplifier, if the car has a DSP system you can select it to adjust DSP output.
FACTORY AMPLIFIER HIFI: This option is just for special cars (BMW E46 & BMW E39, E53) without DSP amplifier system, selecting it can avoid sound distorted if you adjust the volume to high.
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2006 X5 4.8is LeMans Blue / creambeige interior
Prod.date: 2006-06-21
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