2019 Mazda 3 premium. 2018 was last year that had aux input. I need an analog input. I don't feel that I'm asking for a lot. If this were an older system, I would already have one. But this new Bose system is different. Weird little speakers everywhere. I am no fan of Bose but that's what I've got. And it does have some redeeming qualities, like no door speakers. I read somewhere (and I can't remember where) that these speakers will not handle any added amplification. My intended playback device is a mid-high quality Sony Walkman. It made the Bose stereo in my old Mazda 3 sound far better than it ever had. But it will add some amplification. Mazda will only tell me that it was designed to work as is and I will void my warranty if I make any changes. They refuse to elaborate. Bose just refers me to Mazda. There is also the matter of whether the head unit would even recognize the input which I would like to connect in place of the satellite radio. Does anybody know anything about this system? There was a time when I would have ripped it all out and started from scratch. That time has passed, I don't do computers. And this is not a car for experimentation. Thanks.