So I recently just bought a new AUX Input cable for my BMW E39 and after a successful installation, I went to test the setup, and was sadly disappointed. The AUX cable, as everyone knows lets you plug mp3 players and such to the factory stereo. Well one thing I found out after plugging this device is no matter how turned up my mp3 player was, the sound coming from the speakers was very low. And just turning it up would give this hissing sound, so kinda pointless.
Any suggestions on how to resolve this problem? My own suggestion would be add a RCA pre-amp between the connector behind the stereo and my mp3 player. I know you get some things that I have seen on these forums to solve this but they aren't cheap. My budget is $25 max.
thx
