These amps ROCK !!
I have owned a wide variety of name brand amplifiers(Rockford Fosgate, Kicker, JL Audio, Sony, HiFonics, ADS)over the years and I have found that Dual brand amplifiers perform competitively to these brands and for a much lower price. I currently have the XPA6100 bridged into 2 12" subs, and an XPA2100 running the door speakers in my blazer and the sound is AWESOME. The bass is deep and hard, the mids and highs are crisp and clean. A lot of people refer to these as "entry level" equipment, but my experience is that the only thing "entry level" about the Dual brand is the price, and who can complain about that? I would not only reccomend this amp to people, but I am planning on installing an identical system in my wifes truck, and I can do it for around 300 dollars including all the wiring kits.