Ted Smith said
The grounds of all of the input and output connectors are firmly connected together and to the chassis ground.
If you are using USB, your computer may be floating (if, say, it’s a laptop) or connected to a different outlet circuit than the rest of your audio system (and hence could have a big groundloop.)
Creating a new system over the past year, starting with the DS DAC at the centre, has been exciting and fun. I now enjoy a sound well beyond initial expectations, and it confirms just how good the DS DAC (Yale) really is. The better I treat it, the more it keeps delivering.
Starting to think my way through feeds, earths, grounds, shielding etc. - though what I’ve got is quiet as the grave. Thinking more about SQ than hum.
How are the input/output signal grounds connected to each other - series or star - does it matter?
Where does signal ground connect to chassis ground?
I’ve seen an earth connection to chassis at the power inlet - is this chassis ground?
If the DS DAC signal/chassis/earth grounds are all connected, and the same is true for a connected power amplifier, a ground loop will be created. Do you have a recommendation for breaking this?
[edited to fix formatting]