I’m eyeballing this thing:
Smarter Shopping, Better Living! Aliexpress.com
Looks like it uses an adau1452 and some 100 SINAD Cirrus codecs. So should be better than the usual adau1701 or equivalent.
The board can actually do 4 channel audio, so one could do all the X-overging for a sub-sat system on that thing.
Not sure about the software capabilities though. It doesn’t seem to support FIR, although the chip is capable of 24k taps.
Also, at almost 300 euros it’s quite close to the Hypex FA251. Less power, but at least you know what you’ll get.