10 Best Car Amplifiers in 2021

Dave Mostert
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Which car amplifier should you get?

The answer to that may depend on your budget and the type of music you are listening to. This article will cover the best car amplifiers in 2021.

NameCategoryProduct
Rockville dB45 3200 Watt/1600w RMS 4 Channel Amplifier Car Stereo AmpBest OverallRockville dB45 3200 Watt/1600w RMS 4 Channel Amplifier Car Stereo Amp
BOSS Audio Systems R1004 4 Channel Car AmplifierBudget PickBOSS Audio Systems R1004 4 Channel Car Amplifier
Rockford Fosgate R150X2 Prime 2-Channel AmplifierUpgrade PickRockford Fosgate R150X2 Prime 2-Channel Amplifier

1. Rockville dB45 3200 Watt/1600w RMS 4 Channel Amplifier Car Stereo Amp

Our rating: 9 / 10

Rockville dB45 3200 Watt/1600w RMS 4 Channel Amplifier Car Stereo Amp

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Pros:

  • Value for money
  • 4-channel stereo amplifier
  • 3200 watts peak power
  • 1600 watts RMS power
  • Includes top handle carrying case
  • 8 AWG star quad speaker wire connectors
  • Short circuit protection
  • 2-year warranty

Cons:

  • Noise cancellation technology only on subwoofer channel
  • Amp needs to be protected with a fuse
  • Amplifier is very bulky and heavy

Why we like it:

The Rockville dB45 is a powerful 4-channel stereo amplifier that lets you have all your music playing needs fulfilled whether you are blasting your music indoors or using your car’s sound system when you’re outdoors.

This is a high-quality, high-fidelity stereo amplifier that can be used to power your subwoofer or two dedicated subwoofer channels. The amp’s 2 channels each have a power rating of 1600 watts RMS and the channel with 6/10-inch subwoofer bass has a power rating of 3200 watts. The Peak power is 3800 watts.

2. Rockford Fosgate R300X4 Prime 4-Channel Amplifier

Our rating: 8 / 10

Rockford Fosgate R300X4 Prime 4-Channel Amplifier

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Pros:

  • Unbeatable value for the price
  • Capable of powering everything in your car
  • Looks good when mounted inside the dash

Cons:

  • 10-year warranty might seem excessive to some
  • Amplifier could be easier to use

When it comes to car amplifiers, you could check out a number of individual reviews before making a decision. However, instead of this, there’s always a good option to buy an entire kit for your car. This would help you keep energy losses to a minimum but would also save you time.

This Rockford Fosgate R300X4 kit comes with an amplifier, four speakers, and all the necessary mounting equipment. The speakers are also easy to install, and all you really need to use this kit is a little bit of experience and a few screwdrivers. Everything in this kit is designed to make it easy for you to get the most out of your car audio system.

The amplifier is powerful, capable of amplifying 400 watts. There’s also a signal sensing turn on option that turns on the amplifier automatically when it senses an audio signal.

3. Rockford Fosgate R150X2 Prime 2-Channel Amplifier

Our rating: 8 / 10

Rockford Fosgate R150X2 Prime 2-Channel Amplifier

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Pros:

  • Multiple connection options
  • Works with both RCA and speaker-level outputs
  • Great price/value
  • Highly durable
  • Sleek design
  • Multiple protection features

Cons:

  • Power draw will increase your fuel consumption
  • Lacks some features found in higher-end amps

Rockford Fosgate makes excellent amplifiers and the model we’ve chosen here does not disappoint. The amp is built to deliver a continuous 150 watts in the 2 ohm load and 200 in the 4 ohm load. This, in combination with built-in thermal protection, makes it a great option for new and/or cheap subs.

The amplifier also includes a slew of other useful features, such as LED lights to indicate current input and output levels, and variable low and high pass crossover filters, so you can dial in perfect sound quality for your speakers.

The amp also includes some special protection features, such as short circuit and thermal protection, so you don’t have to worry about your system overheating or blowing.

4. BOSS Audio Systems R1100M Monoblock Car Amplifier

Our rating: 8 / 10

BOSS Audio Systems R1100M Monoblock Car Amplifier

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5. BOSS Audio Systems PT3000 2 Channel Car Amplifier

Our rating: 8 / 10

BOSS Audio Systems PT3000 2 Channel Car Amplifier

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Pros:

  • Power – generates up to 3,000 watts of power on either channel at 2 ohms –with the matching 2 ohm gold power supplies
  • Durability – builds with rugged high-grade heatsinking and power transistors
  • Clean sound – home theater-like clarity and response
  • Easy to use – complete wiring harness included with plug, play, and play

Cons:

  • Heavy – weighs a full 33 pounds – adding about 15 percent to your vehicle weight
  • Large – measures 17.25 inches by 11 inches by 9 inches
  • Pricey – price is almost as much as two car subwoofer kits

Attachable Wiring Harness Included.

Are you ready to turn up the volume on your car’s stereo system? The BOSS Audio Systems PT3000 2 Channel Car Amplifier is one of the best car amps for superior sound quality and signal.

It has almost double the power of two most car amps on the market, making it ideal for sound enthusiasts who want to enjoy the loudest, clearest, and most powerful car stereo possible.

6. Rockford Fosgate R500X1D Prime 1-Channel Class D Amplifier,BLACK

Our rating: 7 / 10

Rockford Fosgate R500X1D Prime 1-Channel Class D Amplifier,BLACK

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Rockford Fosgate, known in the industry for high-performance car speakers, has also ventured into producing car amplifiers. The product that has received the most sales in the company’s history is the Punch P1D4-12 Punch amp. With a 350-watt continuous/500-watt peak load, this Punch P1D4-12 Punch amp is ideal for powering your mids and highs in your car.

This product has an adjustable crossover, a power indicator, and adjustable subsonic filter, and comes with a mounting kit and hardware for installation in a variety of vehicles. The biggest criticism of the product is that there is no fuse installed, so you’ll have to get one yourself and install it for safety purposes. Another thing to consider is that this is a 1-channel amp, so if you’re looking to power only one subwoofer then this product can be of great use. There are also no RCA lines included, so you’ll have to make a separate purchase for that as well.

7. Ignite Audio 2 Channel Class A/B Car Amplifier 1600 Watts Peak Power

Our rating: 7 / 10

Ignite Audio 2 Channel Class A/B Car Amplifier 1600 Watts Peak Power

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Pros:

  • Fits under the driver's side seat of vehicles with two pairs of front-facing seats
  • Adjustable depending on the output of the factory radio
  • A Class A/B design for high efficiency and low distortion
  • Very small in size (2.9" x 5.4" x 6.5") and lightweight (2.2 lbs)
  • Use a 30-day satisfaction guarantee

Cons:

  • Average 2.1-star rating on Amazon
  • No Bluetooth or Wi-Fi capability
  • Users report problems with the ground connection

We use our stereos every day every time we are in our vehicles, so it is very important to us to find the best car amplifier. An ideal amplifier should be able to improve sound quality for your music files, be able to act as a Bluetooth receiver, connect to a satellite radio, and connect to the Wi-Fi in your vehicle.

Any device you connect to your car stereo will also need to be small, as it needs to fit in the space available in your vehicle in order to do its job properly. All devices should also be able to withstand the heat and vibration of your car. One way to keep the device cool is to mount it below the seat of a vehicle with two pairs of front-facing seats.

8. BOSS Audio Systems R1004 4 Channel Car Amplifier

Our rating: 7 / 10

BOSS Audio Systems R1004 4 Channel Car Amplifier

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Pros:

  • Car Amplifier 400 Watts
  • Full Range, Class A/B
  • 2-4 Ohm Stable
  • Great for Car Speakers and Car Stereos
  • Power and protection indicator lights displays how much power is being sent through out the car amplifier
  • Pristine audio allows you to maintain your car stereo system to work with the amplifier
  • Works seamlessly to give you the best and most advanced performance
  • Compatible with other brands and models of car stereos and car stero systems
  • 1 year warranty
  • 30-day no-questions-asked return policy

Cons:

  • A little pricey but works really well
  • Doesn’t use a lot of power, so it’s much cheaper to operate than other amplifiers
  • Only protect against the overheating of the amplifier to prevent damage
  • Fit is not universal, so there’s no guarantee that it will work with your car stereo system and car receiver

The BOSS Audio Systems R1004 4 Channel Car Amplifier is a class A/B amplifier that offers 4 ohm stable and is designed to be used with car stereo systems that require anywhere from 35 to 150 watts per channel.

9. BOSS Audio Systems AR1500M Car Amplifier

Our rating: 5 / 10

BOSS Audio Systems AR1500M Car Amplifier

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Pros:

  • It is a very reliable amp
  • Does not create noise
  • Great for upgrading a stock speaker
  • It has many installation options
  • It is easy to tune the bass
  • It offers a lot of power to the bass
  • You can adjust the bass

Cons:

  • Installation requires soldering experience
  • It lacks some extra features

Remote 12v Trigger, 35 Ampere Fuse, Bass Boost, Bass Eq, Low Pass/High Pass Crossover.

Ready for one of the most affordable, most reliable, and most powerful amps on the market? With this 15-inch beast, you can upgrade the stock speakers in your car, and block out all outside noise around you with a crazy amount of power.

BOSS Audio Systems claims that their AR1500M amp can pump out 1500 watts of power, while only clipping at 2-4 ohms. A 35-ampere fuse is included to protect your equipment and your battery… Brilliant considering the average car’s fuse is only around 5 or 10 amps. This extra power allows you to actually tune the way you want your bass to sound. The dial on the front lets you tune the low end of the music.

Frequently Asked Questions (FAQ)

What is the best sounding car amplifier?

Until very recently, most car amplifiers seemed to primarily focus on the pure power they could deliver, leaving sound quality in the dust. This is a misdirection because everyone with a car has heard that an audio amplifier with lots of power is good, but only if it also sounds good.

Fortunately, more and more car amplifiers have discovered this catch-22 and have begun to focus in on sound quality. High-end brands have an edge here, but not one that is insurmountable.

The best sounding car amplifiers arenʼt the ones that pump out insane wattage or even 5 star reviews. They donʼt even cost that much. They just deliver the most accurate and powerful sound possible at their price.

If you are serious about a great sound, build some time into your research to learn more about this underrated feature.

Which brand amplifier is best?

While there is certainly a popular brand of amplifier in every category, the best brand for the job is unique to your preferences. For instance, it might be that the brand that carves the nicest subwoofers sounds best to you while the brand that makes the most reliable amplifiers suits someone else. In the case of head units, it might be a brand you love with software that works well for you and your vehicle. In other situations, a brand might win out because of its specialization in a smaller niche and is thus the most competitive in its personal realm.

The best thing about car amplifiers is that they aren't all that expensive. This means it's possible to test a variety of amplifiers to determine which ones fit your needs and preferences best. Audiophiles might want to read a little further in this buying guide before deciding whether they want to research this product further.

How many amps do I need for my car audio system?

As we explained, the two most important factors for determining the size of an amplifier (other than its other specs) is the number of speakers being powered and the impedance of the speakers. This is really where it gets confusing.

Your head unit or receiver does not display impedance of the speakers in its system.

The impedance of most factory system speakers is within the 4ʼ8Ω range. (And yes, it is possible for speakers to have such a low impedance that they are below 4ʼ8Ω.)

Calculate the number of speakers you need to power and the total impedance of those speakers in €ÜʼʿΩ.

Thus, if your audio system has a head unit with an impedance of 8Ω and you have a 5-channel amplifier capable of powering 200W per channel, you can safely power every speaker.

Conclusion

When it comes to which is the best car amplifier, the choice is a bit complicated. There’s an abundance of options out there and the choice depends on a lot of factors including your car and exact use scenario. The only certain thing is that you’ll have to spend a decent amount of money to get something of quality.

Our Recommendation

NameCategoryProduct
Rockville dB45 3200 Watt/1600w RMS 4 Channel Amplifier Car Stereo AmpBest OverallRockville dB45 3200 Watt/1600w RMS 4 Channel Amplifier Car Stereo Amp
BOSS Audio Systems R1004 4 Channel Car AmplifierBudget PickBOSS Audio Systems R1004 4 Channel Car Amplifier
Rockford Fosgate R150X2 Prime 2-Channel AmplifierUpgrade PickRockford Fosgate R150X2 Prime 2-Channel Amplifier