AMP & EQ ACC
Sound System Adapter for Audi (A4, A5, Q5) - KWE-BO1AU This adapter is needed, if your Audi (A4, A5, Q5) is equipped with an Audi sound system (Audi Sound 9VD or B&O 9VK). It allows you to connect the X701D-A4, X701D-A4R, X701D-A5 or X701D-Q5 to the factory sound system. It is an attenuator which matches the more powerful Alpine Navigation System to the OEM amplifier.