Harman Kardon offers its refurbished Harman Kardon HK 3700 Stereo Network Receiver for $144.99 with free shipping. That's $155 under the lowest price we could find for a new unit. It features: 85 watts per channel 10Hz to 130kHz frequency response AM/FM tuner Ethernet and USB Note: A 2-year Harman Kardon warranty applies.