Wiring question, Alpine dash speakers

[Bodezafa]

I have a 2018 with the Alpine system. Are the dash speakers wired directly to the amp, or are they split off the door speakers? I replaced the door and dash speakers and now I want an amp to power them, so I need to know how many channels to get.

 

[crash68]

The 9 speakers (plus subwoofer) of the Alpine system are wired individually to the amp under the dashboard.
It's the standard 6 speaker system that the dash speakers are parallel wired to the dash speakers which have a built on crossover.