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      01-10-2013, 08:43 AM   #33
shapptastic
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Drives: 09 335i Coupe 6MT
Join Date: Oct 2011
Location: Floral Park, NY

Posts: 42
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I get a slightly worse sound when using the aux plug versus cd/hard drive. Part of it is 60hz noise from charging(was much worse in my Mazda). The other thing is background hiss caused by the output on the iPhone not being a true line balanced output. The best I can do is turn eq off on the iPhone, max out the volume, and turn the aux volume setting in idrive down until the hiss is manageable. I feel there is still a slight dullness to the sound, but it's the same for any car that I've used an analog input to connect to an iPod.
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