Day 1: package retrieval and opening. Very well packed, layer after layer of protective padding. Reading instructions: 3 selectable isolation modes - center position for full isolation, upper, and lower positions for specific ground issues. The unit was plugged in, iPower was plugged in, system powered on, and everything worked instantly, a true PnP device. Sound wasn't bad out of the box, but nothing special.
Day 2 (today): Bass now has textute and more detail. When piano ivory keys were hit, one can hear more detail on the strokes, the pianist's fingernails interacting with the keyboard emerged to existence. Vocal texture became clearer to hear. Music still managed to balance upon extended lows and highs, but once in a while climax startled this listener indicating improved dynamics.
Based on what was experienced on the Nano, i suspect it will take the iG3.0 at least 50 hours to come to its own. That being said, I'm still pleasantly surprised the new ifi toy is already singing in my room after a mere 24 hours of standby.