Nuforce STA200


I am curious about the Nuforce STA200 amplifier  If anyone has experience with the amp it would be appreciated if you would share your listening impressions, both good and bad.  Some of the descriptions I have read classify it as a class AB amp and others a class D amp.  I am not technical savvy about these things, can a single amplifier be both? 
Thanks
George
jetter
So, has anyone new tried passive ? Even with a Parasound A21, as it works with amps that have normal gain.
@daseldin - Currently using VH Audio Pulsar Cu RCA Interconnects. Vampire Wire also makes good reasonably priced interconnects.
Thanks guys. 

I got myself Audioquest Cinnamons (from the digital sources to the DAC) Golden Gates (from the DAC to the pre-amp to the SYS) and Red Rivers (from the SYS to the STA200).

I stuck with my ancient FMS Blacks to the speakers.

The sound is warmer but the details are still there.  I'm happy.
I know this is an old thread and I am a new member, but I have a question about the STA200 for which I cannot for the life of me find an answer.  Is it stable driving a capacitive load?  I have Vandersteen 2ce Sigs that I want to vertically biamp with a pair of STA200s.  However, Mr. Vandersteen warns that many solid state amps are unstable driving the capacitive load when vertically biamping.  I tried calling Optoma to ask, but their tech support is dedicated to their projectors, not their audio stuff.  Please help?!