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
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Let us know how the passive and  the STA200 match us sound wise. Im considering a passive pre myself
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Thanks again jl35 and aberyclark for providing your listening experiences.