if you're talking about the current NEX lineup (avh-4000, avic-5000, avic-6000, avic-7000, avic-8000) then they don't have network mode. not sure if the new generation of nex units was announced or not, but yeah. i'm running the 5000nex and it'd definitely be running active if it was available
they only have basic crossovers: sub low pass, front/rear highpass, and time alignment for all the outputs, like any of the current mid-range units.
this definitely does look awesome and they're one hell of a budget at these prices. wish they would've gone with a left/right separate eq, preferably parametric, though.