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.
BuyDig offers the Sony h.Ear Wireless Bluetooth Over-Ear Noise-Cancelling Headphones in Viridian Blue or Charcoal Black for an in-cart price of $175 with free shipping. That's tied with our mention from three days ago as the lowest price we've seen. (It's the best deal now by $44.) These closed-back headphones feature Bluetooth 4.0, 40mm neodymium drivers, a 5Hz to 40kHz frequency response, built-in microphone, and built-in rechargeable Li-ion battery with up to six hours of play-time per charge.
BuyDig offers the Pioneer Over-the-Ear Headphones for $99.99 with free shipping. That's the lowest price we could find by $37. Features include 40mm drivers, a 7Hz to 50kHz frequency response, and a detachable cable.
BuyDig offers the Beyerdynamic DT-770 i Closed Headphones for $99.99. Coupon code "YADIG5" drops it to $94.99. With free shipping, that's the lowest price we could find by $105, although we saw them for $10 less on Black Friday weekend. These studio headphones feature 16-ohm impedance and a 5Hz to 35kHz frequency response.