line-out vs. Bluetooth adapters
But is the quality of the Bluetooth audio as good as that of the line-out? Good analog is better than bad digital. Yeah, I can buy any one of a few different Bluetooth adapters to plug into one of the AUX inputs in my car stereo system, but if the audio quality goes down then I'm bummed; it also seems like unnecessary additional complexity and yet another point of failure. I'm going to plug in a cable to supply power to the iPhone in any case, so there's no overhead in terms of cable clutter as my one cable routes both power and audio.
I use Bluetooth to listen to music from my iPhone in my car. If your car doesn't have Bluetooth, you can add it for about what these stupid cables cost.
But is the quality of the Bluetooth audio as good as that of the line-out? Good analog is better than bad digital. Yeah, I can buy any one of a few different Bluetooth adapters to plug into one of the AUX inputs in my car stereo system, but if the audio quality goes down then I'm bummed; it also seems like unnecessary additional complexity and yet another point of failure. I'm going to plug in a cable to supply power to the iPhone in any case, so there's no overhead in terms of cable clutter as my one cable routes both power and audio.