Ok, HiFi is hereby officially removed from this thread and is only meant to clarify the thematic content or to touch on it.
@ 77.willo - yes and no, a native solution on the device would of course be optimal, but to achieve this optimum (for my purposes) I started this thread. ;)
@ jansens, the Gira series with flush-mounted radio and BT receiver can do both, only question is whether it has enough power for 2x 3-way speakers?
@ Nordlys, a classic BT radio is certainly not a bad idea, but if I still have the possibility to integrate it into the house (in this case ceiling), I see this as the first option.