I have this amp hooked up to 2 JL Audio 10w3v2's and WOW... it sounds amazing. Before I had it powering a 12w3v2 off one channel and it cleaned up the bass so much more than my old 200 watt amp. This thing is a MONSTER. I definitely recommend this amp because for the price vs. power, you really can't beat it.
I have this powering a JL Audio Stealthbox in my 2003 Chevy Avalanche. 2 x 12W3 @ 1 x 600 W @ 4 Ohms and I was blown away by the power and sound quality that this amp puts out. I've never tried Hifonics before and I was apprehensive about trying them because they are so inexpensive (you get what you pay for). I was wrong! For the price you pay, you definitely get more for this! I also have their 4 channel amp powering my mids and highs. When I first got the amps, I was surprised by the quality of the hardware. It does not look and feel like a cheap amp! This amp in particular I was able to mount them under my rear seats because it is quite compact. Overall, they have obtained me as a customer and I will not hesitate to buy their products in the future.
I have this amp connected to a JL Audio 10w7. With the gain turned half way up and bass boost turned down, this amp performs fairly well. I like that it has output channels for future daisy chaining capability if I ever need it. I have never had any problems with this amp since I have owned it for 2 years now. Pretty pleased with the performance so far.