Here we have a good used fully functioning oem bose stereo amplifier removed from a 2017 Audi A4 with bang and olufsen sound system, This should fit many 17-20 Audi A4, S5, S5, A5 etc with the same part number. We are also parting out the rest of the car so If there's anything else in particular you need otherwise please send an email so I can list it on ebay for you.