Audionet DNC Streamer/DAC
So far so good, but what really caught my eye was watching the company's head engineer, Volker Wischniowski, pull up a laptop and start to manipulate frequency response curves which could then be uploaded to the DNC. You can hook a microphone to your PC, have the free software, called CARMA, calibrate for your microphone model and then use it to take readings in your playback environment. The software can then automatically make adjustments which you can also modify by hand. Upload these to the DNC and you are done.
Kal Rubinson has covered many room correction software suites that are either stand alone or are part of a preamp in the pages of Stereophile, but this is the first time I had seen this process available for a DAC.