The NF STA 200 has a much wider bandwidth than the Rotels. What this means, I am not really sure, technically, because musically, the high frequencies on the NF are musically capable of reproducing much higher frequencies, with music signals. I still do not know what he has done differently, than 10 years ago. There must have been some folks ( likely just a handfull ), who had some issues, as it only takes one issue to raise a white flag. Same happened many years ago with a particular speaker wire, by Polk, that caused some amps to oscillate. I had these cables, and never experienced an issue. I know the STA 200 does not do well below 4 ohms, but this oscillation thing is completely different. If it were me, I would try it, as I have had very good luck, without things oscillating during my many audio years. But, this is me..........you can always replace tweeters, lol.....Seriously, I feel the STA200, based on all of the circuit research I did, would not go into oscillatio; The Vandys, as much experience I have had with them, never caused a problem to any amp I am aware of, except for a clipping issue, which is different than oscillation. It is your call. Could create a new purchase of a pair of tweeters. The Nuforce will likely be better, in sq, than the older Rotels. Like I said, if it were me......You, are not me....Enjoy ! MrD.
