Originally Posted by LawrenceHsien
Today I found out when your iDevice connected via USB cable to audio system you may self adjust the output sound through your iDevice. Will sounds better with your HK system.
Yeah, but I think that BMW always recommends leaving EQ on the iDevice off.
'13 F30 328i, 8SA, EBII, ZMM, ZPP, ZTP, ZLP, ZDA, ZCW, ZDH