The only other piece I have owned that is similar is a Head Room Total Bithead. Being that the DF is MUCH smaller and does 24/96 I'd say there isn't much comparison at all as far as a computer interface goes. On the other hand the Total Bithead ran on batteries and could be used with my iPod on the go. I liked the Head Room image processing very much, why don't other manufacturers make similar systems? Is it considered a gimmick or a sham of some sort? Anyway... I am very much in the honeymoon phase with the DF and listen to 24/96 material almost exclusively through a brand new pair of Sennheiser Momentums Black which aren't even broken in yet.  So far so good!