Amount of control? Do you mean the crossover network? I doubt he is going very deep into this aspect of it, although his head unit does have a rather robust crossover network built into it. It's by no means outstanding, but it should work out fine for his needs. The crossover would also only matter on the rear speakers, as the Polk components come packaged with their own passive crossovers for each side. This will work fine, since he didn't express a desire to go active.