JL has a high reputation to uphold, and does not disappoint. I have it pushing 2 JL w1 10's at 4 ohms and they sound amazing. It hits the highs and lows just like any of JL's higher-priced models. I've had it for 8 months and have never had a problem with it, and it doesn't seem to ever get too hot. My only complaint is that when I put the input switch to high, it shuts off. Like I said though, that's the only thing I can find wrong with it. At that price, it's a real bargain.
I have thus far received the best customer service ever from Sonic Electronix. I had to return an item for another and they gave me no hassle, and an immediate response. I would definitely recommend them to all.