Ive got it hooked up to two older XFL 12s in my old truck that my brother is driving right now. His front end on his truck needs repair , so Im letting him drive my 98 xcab until we get his fixed. upper ball joints. Its got plenty of power to slamm both XFLs pretty good. I may put the 4.0Cu Ft enclosure in with the S.Qubed HDS310s in and see how it does for fun.Ill mess with it later. A little busy with work and Chit right now. But over all. Dammned good amp. Im going need put more power up front soon. Ill be doing another build out this summer for sure