Harman Audio offers its factory-refurbished Harman Kardon 770-watt 7.1-Channel Home Theater Receiver, model no. AVR 3650, for $699.30. Coupon code "399AVR3650" cuts it to $399. With free shipping, that's $300 off and the lowest price we could find. It features 110 watts RMS per channel into seven channels, six HDMI inputs, and remote control. A 1-year Harman Kardon warranty applies. Deal ends May 3.