Skar Audio RP-4500.1D Monoblock 4500-Watt Class D MOSFET Subwoofer Amplifier

After using only Sundown products for the last 7 years, it came a time when I wanted to build a budget build and Sundown was not in it. For years i've seen the massive amount of what I will now call 'propaganda' against this company which said it's products were terrible. Not only is that untrue, my experience is 100% the opposite in my limited time with it. The RP-4500 is as powerful as you would expect a 4500w rms amplifier to be, it has lots of power. For an amplifier that does not include an internal fan to keep cool, the beefy heatsink does a wonderful job even in hot sun of keeping the amp within temp on near clipping load for over an hour. Sound quality wise it is no different than the most expensive sundown amplifiers or the least expensive down4sound amplifiers, in my experience. Budget wise it provides one of the best price per watt ratios in the amp market right now. Very happy with this purchase. What I think could make this board better would be to include a clip indicator knob and maybe a cooling fan. A foam gasket around the back panel of the amplifier would be great to reduce vibration induced noise/rattle. Sundown audio amplifiers for example include this gasketing.

I like how loud and perfect this setup is, or any of my Skar setups for that matter. Just a beautiful thing. Bravo, Skar… Bravo Edit: My 4500.1 is NOT mounted to the enclosure. I fabricated a bracket and it just floats there and stays cool. The 4 EVL 12’s must be getting broken in or something because it is getting even louder! I never even found the limit when I was tuning it. I just stopped when it started to hurt my ears and threw iced coffee on my dash because it was shaking so much in the cup holder. I haven’t even ported the enclosure yet! Good grief man. Peoples reactions when they get in and hear/feel it for the first time… priceless.

This amp is a beast

This is a very powerful amp. It’s definitely under rated. I have it on 2 massive audio summoxl 104’s and I’m about to thro 2 more on it. Just make sure u feed it enough power. The only issue I had was the remote gain was damaged and the seal on the back of the amp for the warranty was broke but amazon quickly refunded me a portion of my money to cover the cost of a new remote gain. Then noted my account and assured me there will be no problem with the warranty if anything happens to the amp. Great quality. Fast delivery. Good packaging.no complaints

If I could give zero stars I would this is the biggest waste of money I have ever spent I bought this hoping I could get more watts to my 2 12’s and door speakers in my truck I already have a working planet audio it’s just underpowered so I got the 4500 watt and I plugged everything into the skar and wouldn’t even power on not even protection mode nothing nothing at all so I thought I had messed something up so I plugged back into my planet audio and everything works just fine