On my gear, room, etc not in the same class at all. I kept everything else constant - cables, music, etc.
Loss of detail compared to Vitus and seemed to attenuate both the highs and lows with a notable lack of bass in comparison to Gryphon and Vitus. Smooth mid range.
Took about 1.5 hrs to warm up enough. Surprised me that it was not competitive, because I have heard some great Pass set ups on friends' systems. They tell me Pass needs the Pass pre to work well, but I did not try that.