I'll look at the TDAs for the filters. Multistage LCR networks suck the power out of the signal and I'll definitely need to preamp everything.Glad it does.
Well, that about sums it up, doesn´t it?
Pity your complex system requires many LM3886 though.
Maybe (didn´t check), TDA7294 is still available?
About same power class, price, in any case you are not comitted to a stack of 3886 boards (I think).