I’m using a U1 mini and have been experimenting with different power cables. I can definitely hear a difference with my AQ NRG Z3 on the U1. More defined soundstage, tighter bass. I only wish I had more AQ plugs to try on my DAC and Amplifier. The difference was enough to make me a believer in power supplies so my U1 is currently out getting the SBooster upgrade.
