If you look at the guts of that amp you can tell where they saved their money, the amp gurus can tell you more in detail but it just doesn't seem like it can withstand low voltage (like dipping below 11.5v) or short circuit such as when a coil melts. Did it sound good? Yeah it sounded fine, in fact it sounded similar to my USA-2000X I had at the time although the AP can't do full range and is class D instead of class AB like the 2000X. I treated my AP amp like a 11 month old baby because I was seriously worried that it'll die if it isn't operating in optimal condition, aka never letting the voltage dip below 12v, I never even maxed out the amp.
....and it died in the hands of a 2nd owner. I felt kinda bad, but I forgot about it in like a week.
What's your budget and what are you looking after? Color of the amp, certain features, power levels, etc...