As one of its daily deals, Amazon offers the Sony Studio Monitor Series Stereo Headphones in Black, model no. MDR-V6, for $54.99 with free shipping. That's the lowest total price we could find by $44, although we saw them for $5 less in winter. They feature a 5Hz to 30kHz frequency response, 40mm drivers, 10-foot cord, and 3.5mm connector with 1/4" adapter. Deal ends today.