Mazda 3 2014 Bose audio system
 

Hi all.
I wan to upgrade sound system in my Mazda.One of door speakers is already rattling ocassionally so this would be good oportunity to do it all.
I did replace my stock head unit in Ford Transit custom 2018 for Pioneer cd/dab, usb receiver.Hooked up 600Watt Blaupunkt amp via RCA. Before only adding amp and speakers passive converter to stock stereo was small improvement.
There is no comparison to dedicated good quality head unit and amp with crossovers.
I wolder if you can squeeze much from Bose amp adding active converter or passive and later active 8band EQ to hook up with amp.
Did anyone attempt to change Bose amp with higher wattage amp or does Mazda use Cam BUS and you would lose autio mute ,phone call microphone and other amp inputs?