Newegg offers the Sennheiser HD 518 Over-The-Ear Audiophile Headphones for $99.95. Coupon code "EMCASKK28" cuts it to $59.95. With free shipping, that's tied with our mention from three weeks ago and the lowest total price we've seen. (It's also a current low by $15.) These open-back headphones feature a frequency response of 14Hz to 26KHz, Duofol diaphragms, and a 10-foot cord. Deal ends May 12.