Originally Posted by RonRizz

No. the lc2 is a line output converter that will accept line level inputs from your bose stereo, or any other high output unit. A balanced line is not typically necessary in a car audio environment. They are typically used when the run between the source and the amplification is a great distance, where the possibility of noise introduction is greater than normal, or in a situation where noise interference is a problem.
That being said, given todays technology, noise introduction into a PROPERLY wired car stereo system is virtually non-existant when using good quality components throughout.
There are products out there, such as balanced line drivers and recievers, that pinpoint the problem, but In my opinion are a last resort to aid in the reduction of noises such as alternator whine (which can be resolved typically through proper component grounding).
In a nutshell, Install your system with good quality components and wire it properly, and keep it as simple as possible to achieve the end result you desire, then and only then would I suggest looking for other avenues to help you solve noise issues, If you even have any.