The point that Zd542 raises is highly valid. Analog output stage is equally important as the conversion stage itself, and given a true (and tested!) 75ohm input, the DAC output will be as good as anything sold today. Some 80's 16 bit chips are far more musical and energetic than some modern variations exhibiting plenty of detail too, it's all there, just down to the designer not to mess it up with a mediocre output stage.