Adorama offers the Audeze Sine On-Ear Closed-Back Headphones with Cipher Lightning Cable in Black for $339.99 with free shipping. That's $60 under last August's mention and the lowest price we could find by $109. These planar magnetic headphones feature a 10Hz to 50kHz frequency response, and 3.5mm to 1/4" adapter. They come with a 24-bit high-resolution Cipher Lightning cable that features a built-in DAC, headphone amp, and Siri-compatible microphone.