Massdrop offers the Sennheiser HD 700 Over-Ear Headphones for $399.99 with free shipping. That's $20 under our September mention, the best deal now by $29, and the lowest total price we've seen. These open-back headphones feature angled drivers, a 10Hz to 42kHz frequency response, and detachable cable. Deal ends November 28.

Note: It's expected to ship December 21.