Active speaker system in the Audi A6 (4B)

Hello everyone,

'Does anyone have any idea how much power this system has? I noticed after changing the radio that the sound quality degrades rapidly at higher volumes. It turns out that the front speakers are directly powered by the radio, while the rear speakers and subwoofer are connected in a different way. Is the radio's output too high, or do I need to rewire something?'
Does anyone have experience with the Aktislausis? Can anyone help me? I just want to listen to music normally!

Best regards,
zipzilla