Skar Audio A U D I O Compact Full-Range Rms Mosfet 4 Channel Car Amplifier (SK-M4004D,400W)

This Skar Audio SK-M4004D amp is a beast in a small package — delivers crisp, distortion-free sound and plenty of power for all four channels. It runs cool, fits anywhere, and really wakes up your speakers. Perfect mix of size, strength, and quality. 💪

Sounds quality good power and ground screws sets backoff causing powerless only thing haven't tried is lock locktite in theads to prevent blackout of set screw

This amp gave my system just what it needed. I was running brand new cerwin vega speakers directly off my new Android deck via wiring harness and stock speaker wires and it just sounded flat and week. I got this amp and some 16ga speaker wire and rewired the whole car and now it sounds so rich, warm, and powerful. With the eq set to hip hop and the bass boat turned on, you probably don't need a subwoofer. I have a sub in my car and it was overpowering my speakers. This amp does a great job compensating for the bass. It made all the difference in creating a rich full sound and making one of the best sounding car stereos I've ever heard. 10/10 would recommend.

Been using it for a couple years now.No issues with it.Better and cheaper than the amps I built system with way baack in the day.

The amplifier is in itself built well and performs as you can expect a budget friendly amp will. As per sound quality I installed this on my truck and it is quite comparable to the 600$ old kenwood that came out of it. It however does have some things to note that are important at this price point, the warranty is voided as soon as you install this thing, the internal components however good are still basic in nature, the installation process is slightly tedious with the output side clip but is expected, and the amp does get quite warm. Because the amp is basic in nature it lacks (at least in my experience) a line filter so that power from your alternator does not affect sound quality. You can simply buy a noise suppressor for the power feed to solve this issue. I did experience the fan never turning off and this was a problem as it does make an audible noise while on. I after already installing the unit and figuring this out, decided to break down the amp and disconnect the fan altogether. There is a simple clip you undo that is delicate but doable. THIS WILL VOID A WARRANTY. But it did solve my problem and after dynoing my 4 door speakers at full throttle for 20 minutes my amp did not get hot just the warmer side of things. After all the little fan didn't do much. I only did this because my amp is mounted by floating brackets under my passenger seat; if this was in a glove box or the trunk of a car there would be no problem. Other than the the sound quality is clean and powerful, the unit is built well and on the good side of heavy (not feeling cheap), and I can expect it to last. Update* the amplifier died after a few months of running it hard. However if you run it well within its ratings I believe it should hold up well