Questmanaudio DAC

This month's STEREOPHILE (May 2003) has a quarter-page ad for a Questmanaudio DAC. Website: An upsampling volume controled DAC.

Has anyone heard it or read a bonafide review???
Seems from their web site all they make is this DAC...hmmm?
If you pay attention to their front page they've got 30 years of experience...
In what??? DACs???
More to discover