Glenn,
Check the above link out. It has 2 in's and SIX outs for a 3 way stereo setup.
I use the stereo in's and outs, and a mono out to the bass amp.(psuedo-sub!)
It has a separate graphic that can flatten the room with an RTA, (Real Time Analyzer - it "reads" the room and creates a curve to add to or detract from the frequancies that color the sound)and then a parametric to further sweeten the curve. There is no "enhancer" as such, but there is a dedicated crossover, EQ, feedback eliminator, compressor .... the list goes on and on, and the darn thing sounds awesome.
It's over $400, but I only have ONE rack space to deal with and this gives me the most in the smallest.
The auto EQ is almost worth the price alone, then you add the extras, and it's a "must have" piece. It really made these EV's sound like pro audio gear. They were always pretty good for their size, but they needed some help, and my mixer wasn't giving me the flexibility. It's an older unit and only has 2 band EQ on each channel and NO master EQ, so I needed something extra. If you have a better mixer, this may not be such an issue for you, but I rely on my 3 space rack to handle so many different situations that I needed to fix the mix externally.
I am very,very happy ! If I ever get a larger sub, this system will kick SERIOUS butt in any size hall. It gave my rig new life......wish it could give me a new keyboard!