Dig up this old thread. Before I decided to invest on HP-A7, I compared these few interesting Japanese USB DACs on this page: http://alturl.com/oruht
Price wise they are all on par. DAC-1000's advantage is more input options, but lacks of amp section and phone jack. What prompt my decision was the fame of Fostex in pro audio and its amp section, though seldom use it. Also DAC1000 weigh more than 3KG, postage from JP would be more than doubled too. Looking forward to your opinion if anyone of you get it.
Another interesting find is the IZO brand, which seems to be Japanese exclusive. Looks very neat and according to a friend in Tokyo they are "damn good". But dare not bite bullet.