BuyDig offers the Able Planet Clear Harmony Active Noise-Canceling Headphones, model no. NC600, for $89.99. Coupon code "NC50" cuts them to $39.99. With free shipping, that's $4 under our mention from two weeks ago and the lowest total price we could find now by $65. They feature LINX Audio, SRS WOW 3D surround sound, on-ear volume control, 20Hz to 20kHz frequency response, and more.