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In Reply to: Q for further edification... posted by RioTubes on July 3, 2007 at 20:01:40:
The DAC by itself would break the ground loop as long as the DAC's power supply output is isolated from the AC safety-earth. However, if the audio zero reference (DAC output) is continuous with the digital zero reference (DAC input), then the AC safety-earth connection in the transport would complete the ground loop. I don't know: I wouldn't mix digital and audio zero references, but I don't have experience with DAC design.
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Follow Ups
- The upstream transport might complete the ground loop. - Al Sekela 11:59:30 07/04/07 (0)