Yamaha YHT-780BL Home Theater in a Box (Black) 5.1-channel home theater system with 500-Watt receiver Separate 6.5" 130-Watt powered slim-line subwoofer with Advanced YST II and FD-Base technology 3 HDTV compatible component video inputs XM Ready with XM HD Surround powered by Neural Surround YPAO system automatically calibrates the sound in your room