how are they? do they have good SQ they throw their rated power? do they sound accurate? is it worth to pay the expensive they are?//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif
US Amps are very good better than most.IMO There older amps where better.IMO In the same price class they are as good as their competitor's and the AX line is very good. Other amps you might condiser is Audison or ARC which I do like better than the US Amps. Might check out the new ARC KAR stuff that just hit the market. Not yet updated on their website yet. Also look at Zapco.
The MD series can be had pretty cheap and they are one hell of a bargain at the prices they can be had for.IMO