Have you seen these from Mr & Mrs 12volt
?
I am interested in the A2DP and perhaps USB playback but worry the built-in handsfree will attempt to usurp the Audi one I already have or otherwise get in the way...
https://www.ebay.co.uk/itm/MMI-2G-Bl...F/112554298106
Attachment 22280
This product is installed on the OEM radio via professional Fiber Optic wire harness without interference. It delivers Hi-fi quality sound rivaling original CD. This product achieves handsfree phone call (make and receive calls, sound through the car speakers) and Bluetooth music play (A2DP) via car stereo and steering wheel control. The unit also offers 3.5mm auxiliary input to support any external sound sources and USB charging port.
A4 (8K) 2008 - 2009
A5 2007 - 2009
A6 (4F) 2004 - 2009
A8 (8E) 2002 -2009
Q7 2004 - 2009
Features:
Hands-free calling directly from the car stereo via Bluetooth (microphone included)
Easy to use interface with menu browsing and music information on your car display
Sound of music, videos, navigation, podcasts etc. through the car speakers
A2DP music streaming
Phone charging via USB cable (300mAh)
Aux-in available
Bluetooth:
Handsfree calling
A2DP streaming
External microphone (included)
Navigation via car stereo
App audio through car speakers
Connections:
Smartphone control via A2DP
USB flash drive or Hard Disk music playback
Aux-in available
Micro SD card
USB: Flash Memory and Hard Disk Drive (USB ver. 1.1 and higher)
File System: FAT16 or FAT32
Storage capacity: up to 64GB music content
Music Formats: MP3, WMA and WAV