Adorama offers the Sennheiser HD600 Stereo Headphones, model no. 4465, for $249. This $25 mail-in rebate cuts it to $224. With free shipping, That's $15 below last week's mention and the lowest total price we've seen. (It's a current low by $44.) They feature a Kevlar-reinforced 10-foot cable, 300-ohm impedance, and 12Hz to 39kHz frequency response.