As one of its daily deals, Amazon offers the Pioneer 840-watt 7.2-Channel 3D Network Home Theater Receiver, model no. SC-1223-K, for $549 with free shipping. That's the lowest total price we could find by $448. It features 120 watts per channel into seven channels, compatibility with AirPlay, Ethernet, and eight HDMI inputs. Deal ends December 12 at 3 am ET.