Just wondering has anyone used the Zapco amps with built in DSP. I was informed that they are the same ones minidsp uses and could I use these for an active set up? 

Specifically it's the DSP-Z8 that's using the miniDSP as the basis of the machine. I'm not sure what DSP system is being used in the amps but I don't believe it is based on the miniDSP. 

Unless they have new amps (real possible) their old ones do not use a miniDSP, but that is irrelevant anyways.  Nothing special about the miniDSP other than its bang for the buck.  Flexibility is nice as well.  All that being said, you need to determine what you need for a DSP and make sure it has that as options.

I personally would love an all in one solution as the simplicity would be nice, but the flexibility given by being able to run any form factor amp that fits the space and having everything taken care of elsewhere usually ends up trumping that for me.