I bought a new single kicker L7Q 12" in the loaded kicker box and orignally bought a MTX jackhammer 1001 amp.... Right out of the box, the MTX didnt work... so I swapped it from my local car audio guys (where I bought it) for this! Oh boy I am glad I did. This amp ROCKS. matches frequency response on my sub perfectly (20-200hz). i swear this thing DOSE NOT get hot. I have the gain a little under half and I couldnt be happier. Glad I dropped the extra money. Everyone says kicker is over priced but I disagree. This set is louder than any system i have had. I just came off of 2 10" audio pipes with a 1000w RMS audio pipe amp and this just crushes it. There is no comparison.