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I have the B&O in my M6, my wife's 2015 7 series had the standard HiFi. The B&O sounds better, but not that much better. I'd be totally happy without it and about $6k more in my bank account.
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2014 M6 Gran Coupe-Alpine White/Blk
2015 740i Sapphire Blk/Blk
2018 Tahoe RST 6.2
2019 Porsche 911 Turbo 991.2
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