well... never. But a separate DAC is useful sometimes.
I own several CD machines.. And only my Sony SCD777ES is better using it's own internal DAC for CD than my separate DAC. and using the CD machine as transport only feeding a DAC.
With a higher end CD player.. adding a DAC may, or may not do anything at all for your quality of playback. And the DAc may not even be as good as no separate DAC.
I like to use five disc CD machines all the time. And THEY do benefit from using a standalone DAC.
I currently have FOUR CD changers connected to my DAC.
I own several CD machines.. And only my Sony SCD777ES is better using it's own internal DAC for CD than my separate DAC. and using the CD machine as transport only feeding a DAC.
With a higher end CD player.. adding a DAC may, or may not do anything at all for your quality of playback. And the DAc may not even be as good as no separate DAC.
I like to use five disc CD machines all the time. And THEY do benefit from using a standalone DAC.
I currently have FOUR CD changers connected to my DAC.