I was skeptical about this amp until I put it to the test. It is very powerful and reliable. This amp can easily burn your voice coils so make sure you have VERY powerful speakers. I ended up getting 2 124x Mofo’s after burning out my Fosgates, lol. Bangin setup now but I have the Mofos wired down to 1 ohm so I have to keep the gain below 75% or I smell voice coils. This amp is a beast! It really does push 4000 watts at 1 ohm without breaking a sweat. Also, the included gain adjustment remote control is nice to have when a cop pulls up beside you at a red light.