Did you try the Triad on high gain? I bet it will have a hint of hiss on that setting. Although pretty much not an issue during music playback which is where that setting is most desirable anyways. Really brings things to life on the Triad :).
Also got my Firestone Power Supply and I have to say it is a nice step up from my wall wart. Definitely more micro-detailing and I could tell right off the bat regarding the treble extension and detail. The sound is faster now, in comparison to the former which felt a bit slower. Bass seems to be more controlled, goes deeper, more quality. Sound stage placement has improved.
@Sara it kinda sounds like Viscer maybe demoed a Triad unit opposed to owning one, I could be wrong though :).
Edited by lee730 - 11/9/12 at 3:20pm