Kit for upgrading the DSP audio system in the Audi A1 8X The vehicle must be factory-equipped with at least: RMC radio system (PR no.: 8AL) Navigation low (PR no.: 7Q4 or 7T2) Experience your music at the highest level thanks to DSP (digital sound processor) Scope of delivery: 1 x woofer 2 x speakers (door) 1 x center speaker Cable set Coding interface Note: Not suitable for head unit part numbers 8X0035180X and 8X0035183X