What is the Best 4000-Watt Amp? (2021) — Powerful Audio Boosters to Buy Today

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Just think about the sheer power a 4000-watt amp can do for your car audio system. The risk is that not all amps are built to truly provide that amount of power. Our audio experts have thoroughly tested the products below to make sure what you see is what you get with the top 4000-watt amp models.

Premium Pick
Sundown Audio Salt-4
Editor's Choice
Lanzar VIBE432.5
Budget Option
Rockville RVA-M3

Reviews of the Top 4000-Watt Amps

1.

Lanzar VIBE432.5

The futuristic-looking Lanzar VIBE432.5 is a 4000-watt amp that is capable of high power. The advanced technology of the car amplifier allows for DC to DC switching power for more headroom.

The sound quality from your new amp is excellent. The protection circuitry, which includes overload and speaker short protection will make sure the car amplifier is never damaged or overworked. To make sure you get uncompromised audio, Lanzar equips the VIBE432.5 with silver RCA connectors and screw-down terminals for a secure connection. 

You can also daisy chain the VIBE with other amps thanks to the RCA jacks.

Pros

Cons

2.

Sundown Audio Salt-4

The Sundown Audio Salt-4 is a very pricey amp, but for the power output you’re getting, the price is warranted. The mono amp outputs 4000w at 1 ohm, which means the peak power is even more impressive.

The class D technology amplifier features a new heat sink, which will further regulate high temperatures over long hours of playing so the unit runs cool. The amp also features protection mode, which will be clearly indicated via the LED status lights. 

To improve the sound quality, the mono amp has a variable low pass filter, subsonic filter, phase shift, and bass boost. 

Pros

Cons

3.

Rockville RVA-M3

The Rockville RVA-M3 is the best 4000-watt unit our sonic experts recommend for people on a budget. For an affordable price, you can get a good frequency response and high power ratings. The 4000 watts is the max output but the RMS is also impressive at 1000w.

The RVA-M3 is CEA certified [1] to produce the power it claims. The acoustic quality will not be compromised at high level volumes or power output at 2 ohms or 4 ohms. You get class D tech for efficiency coupled with MOSFET power that works with your speakers seamlessly.

Pros

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4.

BOSS Audio OX4KD

Our team’s last recommendation is the Boss Audio OX4KD. Capable of 4000 watts at max power, the OX4KD won’t overheat due to the class D tech and efficient heat sink. The reliable car amp is 1-ohm stable and is able to work with another one of its kind to boost the current even more.

One of the best things about Boss Audio is it adds a 6-year warranty to most of their products, the OX4KD included. There are high and low level inputs to connect the amp to the rest of your system with a variable low pass crossover to make sure the right frequencies go through. 

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Pros

Cons

4000W Amps Buyer’s Guide

Power

Our team members stress the importance of the RMS rating (root mean square) as opposed to the max output for the best 4000-watt amps. The root mean square is the level at which you can play your amp and speakers over a long period, while the peak is for short bursts. 

Pay attention to the 4000-watt rating and whether it’s the root mean square or the max capability of the amplifiers.

Channels

How many channels you need depends on how many speakers and subs you want to connect to your amplifier. The figures should be the same. For example, if you just want to give your subwoofer a boost, then you will only need a monoblock amp. 

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Amp Class

You will most often find class D and AB amps for cars. Our experts say class Ds are the most efficient and have a smaller footprint while ABs are larger but have more accurate sound. 

Our Top Pick For a 4000-Watt Amp:
Lanzar VIBE432.5

The best 4000-watt amp is definitely the Lanzar VIBE432.5. Our engineers were impressed by the output, build and features included such as protection modes, silver inputs, RCA line out jacks and pulse width modulated MOSFET. Not only will you experience sonic elevation, but the overall look of the Lanzar amp is also a plus.

Writer

Willie Greer
Willie Greer
Willie Greer is the founder of The Product Analyst. A cinephile, he has made it a personal quest to achieve the awesomest home theater possible. He now shares what he has learned through the years on the site, and has enlisted the help of tech-savvy colleagues in providing more insight about today’s most sought-after gadgets.