Email me if you want to sell the Classic One.
Switching amps typically work better with some speakers than others. In general they sound very clear, reasonably dynamic, and grain free. The clarity can seem so good that it borders on sounding sterile. Thats my take anyway - your mileage may vary. On speakers like Magnepans, they can sound very good. On speakers like Sound Labs (electrostatic speakers), they sound terrible.
My advice is to not consider the purchase of any amplifier without the ability to audition it in your system. Today most progressive companies offer a full money back audition policy and, I believe Nuforce is one of them. After going through many revisions, this amplifier is not likely to disappoint even if you ultimately find its synergy with your particular speakers a bit lacking.