Morpheus

I have seen a little ad for this Emu Morpheus, and I wanted to know more
about Z-Plane filters.

Assumedly these are just like a hi-pass, low-pass, band-pass filter that can
be sort of blended into each other over time.

How flexible is this system?

I was under the impression that all of these filter's parameters were
presets, and that you couldn;t programme them...

Any backfeed?