I am using a Teddy Pardo Dual 5V, 2A power supply to drive both a Bluesound Node N130 and a Chord Qutest DAC. The power supply made a large positive difference for the Node which required removing the internal switching supply and replacing it with a simple internal connecting wire supplied by Pardo. Replacing the switching supply made a smaller but also positive difference with Qutest, increasing clarity and PRAT. Adding the Teddy Pardo also allows for swapping power cords which further adjusts the sound. I am currently using a Furutech FP-TCS21 cable with SonarQuest carbon edition connectors with rhodium plated copper contacts. I have also tried larger gauge Furutech cable with Furutech connectors which works well too.
kn