BuyDig offers the Sony Studio Monitor Series Stereo Headphones in Black for $59.99 with free shipping. (Log in to your account to see this price.) That's $5 under our January mention and the lowest price we could find today by $25. These folding headphones feature a 5Hz to 30kHz frequency response, 10-foot cord, and a gold-plated 3.5mm connector with 1/4" adapter.