Nuforce STA200

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.

Thanks JL35 and Mr.D.  I think I’ll see if RV knows about the NF amp.  I might even ask, in a diplomatic way, whether his retraction was an overreaction to a minute number of incidents.  Thanks again!

I wanted to report back that I have now tried a pair of the STA200s vertically bi-amping my Vandersteen’s.  No oscillating!  Phew!  The amps sound great, but they’re still breaking in.

Thank you for the feedback. What changed your mind about trying them this way, except time ? 

RV said to listen for extra brightness when bi-amped.  I had time, so I compared and found no additional brightness.  I didn’t want to go through the hassle of returning one of them.  I really like the sound staging and imaging from the amps.  Bass seems a little lean, but it’s fast and articulate.  Hopefully the amps will bloom a little more after breaking in.  I’m using a brand new Parasound P7 all analog preamp with it, so maybe that needs some break in time too.  New power cords too.  I’m incredibly impressed with how dead quiet the amps are, however.