Upgradimg the power supply to the Aurlic Aries for a big improvement sound right on the mark!
I owned a Aurlic Aries G2 for about a year… while it was clearly better than computers and MACs… it did not have a dead quiet background.
I traded it in for a Aurender, the background quieted significantly… I now own a Aurender N100 and W20SE. One of the things that really differentiate them from their competition is their relentless work on power supplies. My W20SE performs at the level of my really great analog end but with a lower noise floor.