The efficiency of the Klipsch offer loud playback if desired but only require a small amount of power to do so. There are several members of the Klipsch forum that use Outlaw gear and are VERY happy with the combination of Klipsch and Outlaw. Actually, it's from the Klipsch site that I got word of Outlaw products. I will be using Outlaw with my Reference Klipsch 5.1 system as soon as I can rustle up the funds!