Adorama offers the Audio-Technica Monitor Headphones, model no. ATH-M70X, bundled with the Apogee Electronics Groove Portable USB amp/DAC for $349 with free shipping. That's the lowest total price we could find for these items purchased separately elsewhere by $245. The monitor headphones feature 45mm drivers, a 5Hz to 40kHz frequency response, detachable 10-foot coiled cable, detachable 10-foot and 4-foot straight cables, and swiveling earcups.