Hi all, I have a 2003 BMW 330Ci with the "Business" head unit that has a 1-disc cd player. It fits my needs (I don't need Bluetooth/streaming etc), but the rest of the system is stock Harmon Kardon and is weak. I want to start at the head unit before I look into amps/speakers/cables etc.
I've been told that this stock head unit is manufactured by Alpine (with BMW slapped on it) and outputs a "balanced differential signal". How does this compare to line level (RCAs) and speaker level? Should I upgrade this head unit? I'd prefer not to, because my single-DIN options are VERY limited (crutchfield has no audiophile-grade units that fit my car unfortunately), so will the stock head unit suffice for getting good sound quality if I upgrade the amps and speakers and speaker wire later on? If not, please let me know what you recommend that WILL fit my car.
Thanks for your help!
I've been told that this stock head unit is manufactured by Alpine (with BMW slapped on it) and outputs a "balanced differential signal". How does this compare to line level (RCAs) and speaker level? Should I upgrade this head unit? I'd prefer not to, because my single-DIN options are VERY limited (crutchfield has no audiophile-grade units that fit my car unfortunately), so will the stock head unit suffice for getting good sound quality if I upgrade the amps and speakers and speaker wire later on? If not, please let me know what you recommend that WILL fit my car.
Thanks for your help!
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