The Onkyo RZ Series was designed from the ground up for home theater integration and performance. All RZ Series receivers include custom installation focused features like RS232 connections for control, 12 volt triggers, IR inputs and detachable power cords. There are also optional rack mount kits available for the RZ Series receivers if you are planning to install them in a standard 19-inch equipment rack. The RZ Series utilize the best parts available for increased audio and video performance and durability. As a results RZ Series receivers carry a three year warranty compared to a two year warranty on our standard Onkyo line.