Few comments I found in the other posts/reviews;
These surprising and delicious details were evident from the bass up through the midrange and extreme treble, which nonetheless remained silky and diaphanous. One example was Hans Theessink's voice at the end of the phrase "as I lay sleeping," in "Late Last Night," from his album Call Me (CD...
www.stereophile.com
See "Listening In the Country" part.
quoted; "I took the AHB2 along with me for a weekend at our country place, in Connecticut, to see if it would be as successful with my more modest system there. That's where I discovered that my new hero amp wasn't quite perfect. Oh, its power and resolution were still not to be faulted, but through a pair of Monitor Audio Silver 8 speakers, the sound was somewhat hard and thin. Could it have had something to do with the Silver 8s themselves?"
and further; "Again, I would describe it as a loss of warmth and resonance in the fundamentals of their voices. Unfortunately for the AHB2, this loss pervaded the sound of whatever recording I played. I wrote it off as an example of an amp-speaker mismatch."
I read it sounded thin in other systems as well.
Meaning, the amplifier, like any other, has to be matched to the speakers and it does not fit for all. In your case, it may work, or may not. You can only know it when you have it.
On the other board (not by the measurebators), this is the observation someone posted, comparing it to Pass x25 (25 wpc) - quoted; "They represent two very different designs of solid state amplifiers. The AHB2 is very transparent or neutral I would say. It's specification is hard to beat. Pass Labs on the other hand is more optimized with respect to the musical experience. I listened to the AHB2 in my system for a weekend and that was not what I wanted. Now I have a tube amplifier instead. This is in the musicality aspect closer to Pass Labs."
Although the comment is overall positive, this is probably not the amplifier that I would like to have in my system either.
B.W, I don't think Matrix will play well when plugged directly into the amplifier, especially the analytical type like AHB2. It is better to send the signal through some good pre-amp, and only then into the power amplifier. In case of AHB2 - my take - is that it would probably benefit from having a tube amp as a buffer, and not an ss one. Just a thought.