In another thread a user stated that he added an in-line pre amp before going into the aux port. Has anyone else tried this? I just ordered a unit to replace the CCC in my '08 e90. I had read a few complaints about the sound quality before ordering, but not to the extent as in this thread and no I'm second guessing if I actually want to install this or not. The CCC interface really doesn't bother me nearly as much as I thought it would when I purchased the car
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