The changer bus won't wire direct to an empeg - the signal levels may be different, and one huge problem is going to be that the head unit won't switch to the changer unless it's responsing to the commands from the head unit on the data bus.

I *think* that alpine may have a box to allow an aux input - I've seen it mentioned on the boards here before (AInet or something?) which would work.

The empeg has 10ch parametric EQ in the DSP - however, there's no way of getting to it at the moment. It will arrive in a future software update.

Hugo