As the title says but I have specific needs. When I have used BT receivers in the past which input through the "aux in" on my older car stereo, the sound was anemic and weak. I'd like something better.
Perhaps what is needed is a BT converter with an audio pre-amp. Or maybe some are better than others and a "good" one would be all that I need. However I really don't know much about car audio and trying to find what I want has been fruitless. Maybe such a thing doesn't exist. I have experimented with the iPhone audio settings and it hasn't helped much.
If you know of such a device or can help please chime in! Thanks!