Summary: Like the other guys said - it is big, it is heavy. Big and heavy suggests big heatsink, which you want. I haven't opened it up to see how well built it is inside, but the bottom cover is made of that cheap, thin, plated steel that they make generic PC cases out of.
Summary: Great value.
I had this installed to boost the power to my new Polk Audio front and rear speakers. As far as I can tell it's working according to spec. No problems here.
FYI.. It is a little larger than average.
Summary: I installed this amp in my F-150 two weeks ago and wanted to test it out a bit before submitting my review and so far, I couldn't be happier. My mids and highs are extremely clear now and I can actually hear small details in music that I couldn't hear before with just my pioneer head unit powering...