I don’t know if anyone has got Zythian working on one of the RPi alternatives? For example the Banana Pi M3 or the ODROID-XU4?
Both have Octa-core CPUs and 2GB of RAM. So possibly better performance with some of the sound engines. Looks like the Banana Pi M3 has the same kind of expansion pins as the standard RPi - not sure about the ODroid. But neither of them is too costly, and with no successor to the RPi 3 on the horizon yet, could these be made to work without too much effort?
They are much the same size too, so fitting them in cases should not be too difficult.
I may be getting an Odroid soon, just for experimenting with. Don’t know if there are any DACs like the HiFiBerry that would fit though…
Just a thought