I've a 3 days old a/d/s/ P450.2 amp powering a 3 days old a/d/s/ 236is 6-1/2" component speakers which I demoed to the WAC and Rev Saints forum guys at the blood-donation drive last Sun. If anyone wants to listen to them, gimme a yell.
The a/d/s/ P series is characterized by full sounding, detailed but slightly forward sounding. Sound reproduction is definitely better than average, ahead of brands like Precision Power, Orion, Soundstream, Xetec, Steg etc.
I quote those other brands just as a guideline and not to condemn or say they are bad. Those are decent brands, way above the paria brands and the a/d/s/ is just another step above them.
I'm not sure where you're getting the a/d/s/ but do beware of fake units. The P450.2 is a 4 channel amplifier. http://www.adst.com/products/mobile/ppamp/p450.asp