A dealmac exclusive! World Wide Stereo offers the Harman Kardon NC Noise-Canceling Over-Ear Headphones, model no. HARKARNC, for $299.95. Coupon code "DNEWSNC" cuts it to $149.99. With free shipping, that's $5 under our October mention and the lowest total price we've seen. (It's also $150 off list price.) These USB-rechargeable wired headphones feature active noise canceling, 40 hours of battery life per charge, user-exchangeable metal bows, self-adjusting housings, and a frequency response of 16Hz to 20kHz. Even when the battery is depleted, they work in passive playback mode. Deal ends November 22.