VM Innovations offers the Sennheiser HD428 DJ Stereo Headphones for $67.95. Coupon code “VM50S” drops them to $33.45. With free shipping, that’s the best price we’ve seen for these headphones new. (We’ve seen refurbs for as low as $20.) They feature an 18Hz to 22kHz frequency response, noise-isolation earcups, 3.5mm plug, 1/4″ adapter, and more.