Newegg offers the Sennheiser HD 518 Over-The-Ear Audiophile Headphones for $109.95. Coupon code "EMCANKP68" cuts it to $64.95. With free shipping, that's the lowest total price we could find by $65, although we saw them for $10 less two weeks ago. These open-back headphones feature a frequency response of 14Hz to 26KHz, Duofol diaphragms, and 10-foot cord. Deal ends February 16.