just read the Cyrotweek mini-review, and would like to ask if you are driving the SP Tech speakers with the Nuforce. It has been acknowledged that the SP Timepieces require lots of juice. They challenged my 200wpc tube amp, and forced Nathan's 500wpc (if I recall correctly) pro amp into clipping. How is the Nufoce handling them, if that is the speaker you are using? I'll bet it's got more than enough power.
One more thing before I forget - the Nuforce is exceptionally quiet, thus creating a really black background for the music, and I'm achieving this with the stock power cords.