BuyDig via eBay offers the second-generation Beyerdynamic T1 Over-Ear Headphones, model no. 718998, bundled with the Beyerdynamic A2 Headphone Amplifier, model no. 716766, Sony 64GB UHS-1 Class 10 microSDXC Card, model no. SR64UY2A/TQ, and Slappa HardBody Pro Full-Size Headphone Case, model no. SL-HP-07, for $1,599 with free shipping. That's $574 under the lowest total price we could find for these items purchased separately elsewhere. The semi-open headphones feature a 5Hz to 50kHz frequency response, 600-ohm impedance, velour ear cushions, and braided, detachable cable. The amplifier features parallel headphone outputs and adjustable gain and impedance settings to accommodate headphones with 16- to 600-ohm impedance ratings.