It's a 16/44.1 USB-powered DAC. It's a headphone amplifier. It even has a volume control to drive a power amp or studio monitors. If it was marketed as a domestic product, it would be twice the price.
Burson's latest and greatest headphone amplifier delivers a mighty 4 Watts per channel and is accidentally a brilliant preamp, too. Available as an unbeatable bundle with either the Audeze LCD2, LCD3 or Fostex TH-900.