Below is a list of the iPod AUX & USB adapters for your 2006 A3 non navigation radios.
Bluetooth and USB adapter with iPod and AUX option
-Call audio through your factory speakers
-Song +/- controls through wireless bluetooth audio on Apple and most other bluetooth devices
-Always full control from your iPhone/Android
-Charging of iPod or iPhone (with additional Dension cable)
-AUX input (With additional Dension CABL-AUX)
-Bluetooth with song and call information (car must be programmed for call info).
-USB with song info for memory sticks and Apple products.
-AUX with purchase of EXT1CP2
-Connects Behind Radio
30 pin iPod and aux adapter for the VW Phaeton 2004-2006