It's a great surprise for me.
It replaced my beloved fostex HP-A3 at work. This might not tell you much because the Fostex is a $400 USB-powered DAC + headphone amp that obviously don't fight with the more expensive DACs I own(ed), but it is the DAC that I've been highly satisfied with for 1.5 years now. Many more expensive DACs were sold in that period because, while they were much better technically, they wouldn't connect me so deeply with the music.
The Source has this connection to music.