I run my 2200 at 1/2 ohm daily on 4 twelves. It does not get hot or act stupid. Then again, it does not see anything below 12.7v, ever. Only drops that low if sitting still at idle, wide open on the volume. Take heed when it comes to the clipping light, and you should be fine.
4 Fi SSD/Fi BTL soft parts 12s on AQ2200 at .5 daily;
Focal Polyglass comps/Crescendo CZ65s on JL 300/4;
Mechman 240, DieHard Platinum AGM & Optima Blue top, all KK 0 gauge runs and terminals.