Was a bit skeptical prior to purchasing this amp but the installer told me don’t worry, you’ll love it. I currently have a Hifonics Brutus amp pushing 2 Fosgate HX2 12’s and it sounded alright. The car I have comes with pretty loud stock stereo as it is.. supposedly 300 watts. But man after they got it all hooked up and tuned the sucker, man this amp impressed me and I can’t stop bragging to all my friends the power this little champ kicks. Plus the installer told me he hooked up the 12s at 1ohm.. Honestly I’m no stereo guru but when he cranked it up the car came alive! So me of course being the way I am I bumped all the way home for at least a good hour and the amp was just warm, not even hot! WOW! I have to hand it to the folks at Alpine, they have gone above and beyond with this amp. The certificate also gave me a rating higher than what the box advertised. Not to mention the sound was clean, no motor noise or whine and no clipping. Very impressive. I didn’t purchase the amp from this website but man I just had to put my 2 cents. If you’re looking for clean sound take a look at this little champ, you can’t go wrong, YOU will be happy with this purchase.