As I have been working the NOH has been coming into its own more and more.
At first the extremes were a little lacking and the midrange a little grainy.
After 4 days of non-stop music I am happy to report some very nice changes...
Midrange is crystal clear and allowing me to easily little details that I had to strain to hear with my other preamps or didn't actually hear at all. By hear I don't necessarily mean "hear", but that it is a cleaner, easier to identify sound.
At the extremes, the NOH really opened up in the last hour or so. I am finally getting some sparkle and air on the top.
In terms of the bottom, it is dynamic, punchy, and articulate. I just listened to a few cd's with an upright bass and it was so right sounding. Very natural and artifically emphasized or enhanced. A snare drum has snap and the intial whack grabs you. It did help to do a little tuning on the 40's PR as well.
Overall, I think this is a very good product and will work very well assuming the rest of the gear is up to the challange and mates well.