Harman Audio offers the factory-refurbished AKG K490 Noise Cancelling On-Ear Headphones, model no. K490NC, for $174.99. Coupon code "119K490" drops it to $119. With free shipping, that's $40 below the lowest total price we could find for a new pair, although most stores charge $250. These closed-back headphones feature a 20Hz to 20kHz frequency response range, detachable cable, folding earcups, USB charging, flight adapter, and carrying case. A 1-year AKG warranty is provided. Deal ends May 17.