I know where you're coming from.

When I picked up my 2006 last April from the factory in SC, I opted out of the premium sound system to have Bavarian SoundWerks in Atlanta put in their speaker upgrade w/amp&sub + icelink.

It does lose the automatic cutoff when you answer the bluetooth phone, but I still think I came out with a way better deal & sound. I, too, can't believe BMW has not hooked up with a premium speaker manufacturer.

They already get some parts from Alpine & HarmonKarden.

Without great speakers, everything else is mute.
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Mark

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2001 X5 4.4i topaz blue/sand Sport, complete Dinan S2

, hitch, V1, tint, BSW Stage 1, Alpine INA-W910BT
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Life is not fair!
You can't protect people from their own stupidity!
Laughter makes life worth living