Hello everyone, I have an 09 A4 Quattro

I believe its the "base" model and I'm looking to add a USB connection to the factory stereo. The car has the headphone jack in the center console but I just hate it. The sound quality isn't there, and it tends to have some static.

I'm looking for some solution where I can keep my factory stereo, but have a USB connection to plug in my IPhone. Along with the ability to use steering wheel controls, and not have to touch the phone at all once its connected. There is a accessory pin connector on the back of the stereo, I bought a cheap 20 chinese device that looked just like what I wanted, but it didn't work at all..

Any ideas at all would be greatly appreciated!