Adorama offers the Audeze Sine On-Ear Closed-Back Headphones
in Black, model no. 200-SINE7-2115-00, bundled with the FiiO E17K Alpen 2 USB DAC / Headphone Amplifier
with free shipping
. That's $139 under the lowest total price we could find for these items purchased separately elsewhere. These planar magnetic headphones feature 80x70mm drivers, a frequency response of 10Hz to 50kHz, and 3.5mm to 1/4" adapter. The amplifier features USB support for resolutions up to 32-bit/96kHz, S/PDIF resolutions up to 24-bit/192kHz, dual line in/line out ports, digital coaxial input port, and line out.