4 stars because the blue light does not light up. Amp works great. When i first hooked it up I was feeling underwhelmed remembering all the reviews about it putting out 1/3 the power that it is rated at but i figured out it comes set to the higher imply voltage. When i flipped the input voltage switch to the low voltage setting it came to life. I’m pretty sure all the people trashing the power output are having this issue and not realizing it has a switch for it. This amp has small 4 guage power and ground inputs not the 0 guage advertised but a 0 to 4 guage adapter worked well for me. I say small because the 4 guage post on the adapter would bot go in i had to grind it to get it in. I ground the posts on tree sides opposite each other so it have a little more space between the power and ground if you shave the sides closest to each other i doubt it would fit with out grounding out. I’m running it with an HCCA 104 which is a 10 inch dual voice coil competition sub in a custom FATBOX USA box. Wired it to 2 ohm (parrallel) and it hits better than most dual 12 systems I’ve seen with just this amp and the single 10" orion sub. Sub is rated 2000 watts rms and 4000 watts peak no issues. As for people having trouble with it shutting off mange sure your using the right guage wires based on your application and length of the power and ground runs. If you put a second battery in the trunk and use 0 guage from the battery to the amp in a 4 or 5 foot length it has no issues and absolutely no light dimming at all. I put on blasphemy by tupac for those of you who know it that song hits ridiculous. I even went full gain full bass boost full volume full bass on factory head unit and no lights dimming at all with the second battery….
