>> Isn't it easier to get it to work through qemu-emulated
>> sound card for which Morphos has drivers?

> I am not aware of qemu being able to emulate any cards
> that MorphOS has drivers for.

Zoltan Balaton to the rescue:

https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00344.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00349.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00479.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00482.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00606.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00624.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00631.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00857.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00862.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00867.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00869.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00905.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-02/msg00910.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-03/msg00197.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-03/msg00208.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-03/msg00219.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-03/msg00293.html
https://lists.gnu.org/archive/html/qemu-ppc/2023-03/msg00345.html

Edit: added some more links

[ Edited by Andreas_Wolf 14.04.2023 - 00:05 ]

Is QEmu a viable solution compared to a real Powerbook or Powermac? Can you drive multiple monitors?

No and no.