I just bought the Lumin A1 and have been playing it for a few days. It replaces a Naim Unitiserve and the DACs on a MCD500 cd/sacd player. It plays DSD files whereas the Naim did not. Not inexpensive but great sounding DACs...DSDs are impressive but it also does a remarkable job on 44.1 FLAC files.
http://www.luminmusic.com/lumin-a1.html
http://www.luminmusic.com/lumin-a1.html