Adorama offers the Audeze LCD-2 Planar Magnetic Headphones in Aluminum for $649 with free shipping. That's tied with our mention from a week ago as the lowest price we've seen. (It's the best deal now by $346.) These open-back headphones feature aluminum earcups with lambskin leatherette earpads, a 5Hz to 20kHz frequency response, 1/4" to dual 4-pin mini-XLR 8-foot cable, and 3.5mm to 1/4" adapter.