7.1.4 configuration, 5 subs in total. Anthem MCA amp for FL, FR, Outlaw M2200 center, and Marantz for the other 8 channels. For my need, the Denon could have done it all but got the amps anyway from when I was using the Marantz prepros, so may as well keep using them. Too much work to put them put back in the box, let alone trying to sell them.