got back from vacation yesterday, my ref-9 SE and p-8 were shipped to my work so i could get them home asap, as of now i have about 15 hrs on them and from my listening right out of the box there is a distinctive difference between the ref 9s, the SE has more punch, imaging, definition, and the stage is more detailed, the low end is rock solid, and that carries right through the mids and highs, as of now they are easy to sit and listen to for hours on end, thanks Jason and the nuforce crew for a quick and fine job on my ref 9s, will follow with more as time goes on,