I currently have a Xonar Muses Edition as my DAC/amp here at work driving some HD650. I am planning to buy a some sensitive, closed headphones (Meze 99 or PM3) too drown out the aircon during summer. The Xonar sounds fine with the HD650 and the gain is not to much. However with my more sensitive headphones the gain on it is WAY to much, meaning there is some channel imbalance at low volumes on the volume pot. Any thoughts on how the Modi 2 U and Magni 2 Uber compare and especially how is the gain on the Magni 2 ? Have there been rumours of the Modi/Magni 3 yet?