One of the best sounding sources you can get from your computer to your dac via AES or Coaxial output. Much better than any USB solution for your dac. In addition, it can be used as a stand-alone dac or as an analog to digital converter for a microphone preamp. It has been kept in my computer, so great condition. Comes with both analog and digital breakout cables as well as a XLR to coaxial adapter built by Lynx specifically for the E22.
For more info:
https://www.lynxstudio.com/products/e22/$500 shipped + 3.5% paypal fees. Feedback can be found on Head-fi under the same name.