As one of its daily deals, Musician's Friend offers the Numark Electrowave Premium Isolating DJ Headphones in White for $49 with free shipping. That's the lowest total price we could find by $50. They feature 10Hz to 22kHz frequency response, 50mm drivers, 10-foot detachable cable with 1/8" gold-plated connection, collapsible design, and glow-in-the-dark Numark logos on each side. A carrying case and 1/4" adapter are included. Deal ends today.