Inputs for one thing. I don’t have to run a separate mixer when my wife sings with me. The Eon One has separate channel EQ controls as well.

That 10 inch sub really produces a nice low end. It’s plenty loud for my needs.

Sound dispersion. In real use it seems I get close to 180 degree spread although the specs say less than that.

I EQ’d my 4X MAXX system to get the best sound I could out of my Eon One and 4X and have been very happy with it.

Only down side I’ve found is that it’s a bit bulky.

One final note...

The MAXX EQ system on the 4X is one of the best EQ systems I’ve worked with..including some outboard mixers.

Just a suggestion, before judging the sound of a PA with the 4X, try EQing the 4X to work with the PA.

I’ve got different MAXX EQ setups for all three of my PA’s. and I think the PA’s really come alive when using the MAXX EQ.