@tomic601. I am not looking at any of this as an argument. To everyone else. I owned, and enjoyed, the Pioneer M22. And, my recommendation of the Nuforce is a sensible one, and in my experience, it betters many things mentioned here, and that is suitable to the desires of pts, without having to spend up to 3K, and without producing heat. I have owned every manufacturer mentioned ( with the exception of Atmosphere ), and many models from all of them. I like this Nuforce amp, as I bought it for the shits and giggles of it, at the $499 price. After a few hundred hours of constant music playing through it, I was quite impressed. I have tried it with several different types of speakers, and now run it exclusively through my mains ( 104 db horns ). There is no amp from my past I wish to own again. Not my Krell, not my CJ, not my AR, not my Stasis, not my M22, nor any from the above. I am curious as to why nobody mentioned McCormack. I am done with tubes, and I am done with Class A. All of those amps did a few things very well. This amp does all things very well. So, I recommend it. I sold 9 amplifiers from my collection this year, 6 of which brought me more than my $499., all because of this little fella. I do caution that it is high gain, with low input sensitivity, and only 80 wpc. I no longer need an amplifier that runs the equivalent to 4 or 5 incandescent light bulbs. I have a stove top for my eggs. I am happy listening. Although the STA200 is not class D, I do feel class D is the future, so why go backwards. I am not making the claim that it is the end all, for all people, but anyone I have spoken to who owns one ( some based on my recommendation ), loves theirs. Thank you, Enjoy ! MrD.