Best 4 Channel Amp 2021 Complete Guide & Reviews

If you are an artist or a musician, then you are well aware of the importance of amplification. Working with amplification is a necessary skill to master in order to succeed. There are many types of amplifiers and amplifiers can become better with practice and experience. This article will show you what is 4 channel amplifier and how it works.

Investing in the best 4 Channel Amp 2021 is an ideal way to create a good full range, premium sound quality from your speakers. This works even better if you currently have two speakers and a subwoofer setup.

To improve the sound quality of your speakers, you will need a 4 Channel Amp. They allow you to control and amplify the electrical audio signal at high voltage, after which the speaker is used to drive the car from the inside.

What is a 4-channel amp?

The 4 channel amplifier is similar to the 2 channel AMP but there are some differences. Both have a power supply to increase the 12V battery voltage. Without it, the speakers would not get enough output power to run properly.

Nowadays 4 channel AMPs are also prevalent. This means they can be connected to a speaker load of two channels to offer more power. They will also provide options like crossover or bass boost for two of your four channels.

Number of channels

when looking at a car amplifier is deciding how many channels are needed. The power of an amplifier is distributed between channels. For example, if there are 300 watts of electricity between 3 channels, each will have 100 watts.

If you just want to power your subwoofer, it is advisable to go for a monoblock / single channel. You better buy a more powerful car AMP that runs without pressure for better quality.

How to Bridge a 4 Channel Amp

Bridging a 4 channel car amplifier will effectively double the output of your amp so that you can maximize the power of your speakers or subwoofers. As long as you have a basic knowledge of car audio wiring and how to connect an amp to your car’s audio system, it’s relatively easy to feed a four-channel crew. The most common use when building a bridge over four channels is to connect the amp to a pair of 4-ohm subwoofers.

1st Step

Find speaker wire terminals on your amp. There will be four-speaker wire terminals, or channels, consisting of both positive and negative terminals with a speaker down clamping system so that the speaker can hold the wire securely in place.

How to Bridge a 4 Channel Amp

2nd Step

Run the speaker wire from the positive terminal of Channel One to the positive terminal of the subwoofer. Use a wire stripper to remove about 3 inches of insulation from both sides of the wire, and securely lower the speaker wire into the APP terminal using a screwdriver.

How to Bridge a 4 Channel Amp

3rd Step

Run the speaker wire from the negative terminal of channel two to the negative terminal of the subwoofer. Once again, clamp the speaker wire securely down by tightening the 3-inch insulation strip, and the terminals screw-down clamp at both ends of the wire.

Repeat steps 2, and 3 for channels three and four. Again, run the speaker wire from the positive terminal of channel 3 to the positive terminal of subwoofer two. Finally, run the speaker wire from the negative terminal of Channel Four to the negative terminal of Subwoofer Two.

How to Bridge a 4 Channel Amp

Why 4 channel amp is the favorite choice?

A significant number of car owners and professionals prefer to have a 4 channel amplifier as opposed to other AMP options. For starters, it offers great value for your money and is rather a versatile choice. In this regard, you can securely connect 2 to 6 speakers with a 4 channel amplifier.

The compact design is introduced in the leading best 4 channel car amplifierr model. That way, you can install an amp anywhere in your car. In fact, it is the perfect amp choice for installation in tight spaces, such as the back seat.

Amp can also be connected in a number of ways, all of which guarantee audio output quality provided they are properly connected. This will allow you to configure your car stereo system the way you want.

Choosing the Best 4 Channel Amp 2021

If you are looking for a way to replace the sound system that comes with your car or if you are looking for a brand new one, chances are you will find the best 4 channel amp in the market. ۔

We’ve researched some of the best products, most of which are about finding products that stand out better than others. Before we get started, let’s take a closer look at some of the key features you need to be aware of when shopping on the best 4 Channel Amp.

you have 4 independent audio amplifier sections, which are now generally designed in such a way that each pair of channels can pull an extra electric lid bridge if needed. Some have features like bass boost control that can only be used in 2 out of 4. It varies from brand to brand and model to model, so it’s important to make sure before you buy.

key features:

Watts: Watt is the primary power for AMP. It is important to keep in mind that if you are using an amp and you want more than 1000 watts of high-quality sound, you should consider the second or more powerful one according to your demand.

Adjustable equalizer: Equivalents filter different frequencies and, while most have 4 channel AMP, they are usually automatic. We found some people who could adjust. This will give you additional controls that can be adopted to enhance your car’s sound system.

Remote control: You don’t have to be thinking about the remote control. Some AMPs come with a remote turn-on lead connection, some do not. There are many ways around it but it gets easier if anyone is involved.

Quality: The best-sounding AMPs use well-designed circuit boards that are carefully planned. These boards include high-quality components that make your system sound better. You don’t want a company that takes manufacturing shortcuts.

best 4 Channel Amp

Best 4 Channel Amp 2021

A best 4 channel car amplifier uses four independent amplifier sections and signal paths instead of two. Many of them also have 2/4 channel input switches. It works better when you are connected to a head unit with two channels available so that you can run four power channels.




BOSS Audio Systems R1004

Planet Audio 4 channel amplifier 

Kenwood 4 channel amplifier car audio

Hifonics 4 channel ampl

Pyramid  4 Channel Amplifier

MTX Audio WET75.4 400W RMS 4-Channel

Alpine X-A70F X-Series 4 Channel Power Amplifier

Rockford Fosgate R2-500X4 500-Watt 4-Channel Amplifier

Lanzar VCT4110 2000 wat 4 Channel Car Amp

1.BOSS Audio Systems R1004 4 Channel Car Amplifier 

The BOSS Audio Systems R1004 offers a 4-channel amplifier that is perfect for powering your favorite speakers. With High Pass and Low Pass filtering, you can tailor the sound quality to fit your needs. This amplifier also has a variable 8-ohm load to adjust the amount of power sent to each speaker to help balance the sound. The R1004 is a great choice for powering systems with up to four speakers.

If you still use your headset to promote your device, you never know what you’ve lost! The headset is often unable to deliver your loud, high-pitched sound, at least in the middle of a struggle to distort (and damage) your sound amplifier. This is just a small best 4 channel amp for some 6×9 “or 6.5” speakers. Sounds good and fits snugly in a limited area, so if you’re making an ice chest radio or something like that,

This is where a series of MP terrorists enter. The True Amplifier technology is a solid 2 ohm (enough power for a 4-ohm loudspeaker in just one channel and even for an open door, dashboard, or dive speaker.) Known as the best 4 channel amp under 100$.

 Boss Audio R1004 Riot 400


  • Great Sound Quality
  • High power output
  • Excellent amp for Subwoofers
  • The cooling fan is silent


  • One speaker center
  • Cables not included


2.Planet Audio AC1200.4 4 Channel Car Amplifier

Planet Audio AC1200.4 is loaded with features that you just can’t find in other brands. Even though all its performance parameters are outstanding, it’s one of the most recognized brands in the audio market. This brand is known for producing high-quality products with very nice and attractive designs. This is one of the best 4 channel amp brands in the market for its unbeatable efficiency and sound quality. It can really outperform other brands in the same price range.

Planet 4 channel car amplifier is rated at a 4.3-star rating with over 293 satisfied users. If you are looking for a great high-speed car amplifier with high sound quality, this should be your choice. The planetary audio amplifier is the most sought-after motor amplifier. The amplifier of these best 4 channel car amplifier has a low and high response which gives a clear sound to the speakers.

Planet Audio AC1200.4 is equipped with 4 channel AMP, a lower-level subwoofer control. It has the most powerful power PWM with high power output and low input level. It has a 2-ohm stable amplifier of 1200 watt max power. An audio planet allows you to control the sound.

Planet Audio AC1200.4 4 Channel Car Amplifier -



  • It has low and high input power
  • Power supply
  • LED indicator protection


  • Short term warranty


3. Kenwood KAC-M3004 Compact 4 Channel Amplifier

The Kenwood KAC-M3004 is an ultra-compact, powerful stereo amp designed to power today’s highly efficient audio components. This amp doubled the output of the Kenwood head unit and provides better sound quality for the passengers in your vehicle. It features a built-in 50-watt RMS/15-watt peak RMS speaker output, so you can connect up to two pairs of speakers or headphones for ultimate performance.

You can’t find a more reliable name on auto-combat equipment than Kenwood, and it’s the best 4 Channel Amp. They make this high mount extension easy to install and comes with easy access to hookups. Its maximum 600-watt power output should satisfy any stereo owner with a combination of three or four speakers.

It has features that are as unique as RMS power and has a built-in auto-sensing switch. We were pleasantly surprised at how powerful this amplifier is in its small size. This amplifier is completely safe and the printed circuit board is well placed to help remove moisture and resist rust.

This small marine amp is the perfect way to power a pair of MTX Thunder 6 1/2 speakers, it’s also great for driving an aftermarket subwoofer. This amp is 30 watts with a frequency response of 4hz- 50khz, it is the best 4 channel amp with a power output of 30 watts and 2 channels. The true single-channel pro. The Kenwood KAC-M3004 Marine Amplifier has a powerful 30 watts RMS of power.

 Kenwood KAC-M3004 Compact 4 Channel Digital Amplifier


  • An auto-open feature
  • It is easy to set a compact size


  • Short term warranty


4.Hifonics BRX616.4 Brutus 4 Channel Amp

Hifonics BRX3016.1D. The best 4 channel amplifier car audio is 3000 watts. It is a normal size measuring 17.7 inches x 9.8 inches x 2.4 inches. It also weighs a lot of pounds. This means you can fit it into most cars without any problems. You don’t have to worry about gaining weight and losing weight. Also, the construction of BRX3016.1D is first class. It is durable. The hardware is packed in a compact and solid case.

The Hifonics are also designed in a monoblock. This means that everything is packed in one unit. This unit is a subwoofer amplifier. At the top of being 3000 watts, it is 1-ohm stable. You can also leash the unit by making it easier to install.

The Hifonics BRX3016.1D has an electronic crossover on board, which means you can use it with all your other equipment. It even has a boosting EQ. One last good thing about it is that it has two LED lights. Greenlight and red for electricity which is a sign of your safety. Above all, it comes with a bass remote.

Best 4 channel amplifier car audio 2000 watt


  • Maximizing power efficiency
  • Flexible bass
  • Adjustable filters


  • No high-level inputs
See also  Best 4 Channel Amp Under 100 Dollars in 2021

5.Pyramid PB618 2,000-Watt 4 Channel Amplifier

Pyramid PB2518 is a powerful unit that has all the inputs and outputs needed for your car sound system. Although this unit is not a monoblock to remember these things, it is 3000 watts. Consumers still like it even though they know it at the time of purchase. If you want something that is the same channel, then this is not the unit for you.

This is another normal unit. It measures 10.24 inches by 2.26 inches by 11.02 inches. It also weighs a modest 8.14 pounds. This makes the unit much lighter than the others, but it still packs a good punch and works great. PB2518 is made of high quality and is durable. This is the best 4 channel amplifier car audio 3000 watts. It can be turned on remotely or by any control. Like some of the other units, it has LED indicators and safety indicators.

This Amplifier is designed for professional sound applications, and is ideal for use in recording and mixing studios, or anywhere where you need a powerful amplifier. It is the perfect choice for those looking for a feature-packed amplifier that’s equipped with four high-power channels to handle 2,000 watts of power, as well as a wide array of features. This 4 channel Amp features dual variable bass boost (0-12DB @ 50Hz) and variable gain control (0-12dB),

Pyramid PB2518 3,000-Watt 2-Channel Bridgeable Mosfet Amplifier


  • Fully Adjustable Electronic Crossovers
  • Heavy Duty Aluminum Alloy Heat-sink


  • Not strappable


6.MTX Audio WET75.4 400W RMS 4 Channel Amp

The popular MTX series has been around for more than 20 years, which speaks volumes about its quality. Thunder 75.4 is the smallest Thunderbolt in current production. It goes into a nice house, with a company logo and a power indicator displayed on top.

Class AB amps are very popular among car owners who want a complete sound setup. This is due to the relatively cheap prices and excellent Class A and Class B. The MTX Audio Thunder 75.4 is one of many AMPs in the Thunder class.

This AMP has a built-in surface, which gives it tremendous resistance to vibration, whether you drive in rocky or rugged terrain. It is very similar to a 4 channel amp with a different path. The front channel filter can be applied anywhere from 10 to 200 Hz on a 12 dB / active shield. Lower and lower background filters are 50 to 750 Hz at the same 12 dB / octave.

MTX Audio WET75.4 400W RMS 4-Channel


  • The Good frequency range
  • ohms is very good


  • expensive


7.Alpine X-A70F X-Series 4 Channel Power Amplifier

Alpine’s all-new X-Series is designed to deliver class-leading performance in a versatile system offering. Featuring Alpine’s MOSFET™ technology infused in the Class-D amp, Alpine X-A70F delivers phenomenal power handling, high efficiency, and an incredible sound quality punching out of the box. Moreover, the X-Series offers two custom weekly setup options: either Entertain or Go. The Entertain mode is designed for people who want maximum midbass output.

Alpine is a prominent product in the automotive market. So it’s no surprise that the Alpine X-A70F is the best example on our list. In fact, it is actually the best 4 Channel Amp for other amp errors in which it takes the title. However, it is also the most expensive place on our list.

Alpine X-A70F is one of the biggest amps on our list – even though it’s a topology D course, so the heat won’t be a problem. Also, the input feeling is slightly reduced at 400 mV to 4 volts which will require new head units or signal transmitters a small price to pay for such a quality best 4 Channel amp for Sound Quality.

The Alpine X-A70F looks very wide with an impressive range of 5 kHz to 100 kHz. No other AMP on our list comes close to that price. On the plus side, the X-A70F also has low noise at 115/95 dB and for the first time has a relationship with the MTX with 0.05% THD.A great choice for a high-performance car audio system. Alpine’s X-Series amps deliver high power with low noise.

These amps produce clean and accurate sound, with a well-defined soundstage that allows you to hear the components in your system correctly-as they were designed to sound, rather than how the rest of the vehicle sounds when you play music through its internal speakers. The X-A70F amp delivers 120 watts of power at 4 ohms, and 175 watts at 2 ohms.

Alpine X-A70F X-Series 4 Channel Power Density Amplifier


  • Clear sound and high confidence
  • Good specification with high volume levels
  • Easily adjustable settings


  • Expensive


8.Rockford Fosgate R2-500X4 500-Watt 4-Channel Amplifier

The Rockford Fosgate R2-500X4 Class-D amplifier gives you the power you need in a compact design. No matter what type of system you’re looking to power, the R2-500X4 is ready to do it all. Power up your stereo system with 50 watts of power per channel. Get the kick in your favorite songs that you’ve always desired with the R2-500X4’s 500-watt output and single 4-ohm impedance.

Rockford Fosgate R2-500X4 4 channel amplifier consider a budget-friendly ultra-compact amp that packs better than you expect. The R2-500X4 Full Range Class D 4-Channel Amp with 500 watts of RMS power is rich in features and performance for on-demand power and bass supply. Technology makes this AMP highly efficient by reducing the demand for vehicles

This amp has a high-performance, full-range 4 channel amplifier (1.9″ x 6.8″ x 10.1″) with 500 Watts of RMS power and 400 Watts of peak power. This amp is packed with features and performance to deliver power and bass on demand with 500 Watts of RMS power. Class-D technology makes this amp extremely efficient by reducing demand. A built-in digital crossover (24db/octave) allows you to

Fully adjustable 12 dB / active high and low pass Butterworth crossover features, balanced differential inputs RCA pass outputs, high-level input capable, circuit and top-mounted controls capable of auto turning Pass-through When purchased from the famous Rockford Foss Gate seller, the famous Rockford Foss Gate is standardized with 1-year full warranty.

Rockford Fosgate R2-500X4 500-Watt 4-Channel Amplifier


  • Great heat management
  • High and low input
  • You can enable front and rear speakers


  • Cannot be separated


9.Lanzar VCT4110 2000 wat 4 Channel Car Amp

The Lanzar 2000 watt 4 channel high power MOSFET amplifier is a smart choice for your car stereo system. It boasts 500 W x 4 out of 4 ohms or 1000 W x 2 bridged out of 2 ohms. With a total of 2000 watts at 4 ohms and 3000 watts at 2 ohms, it’s the ideal choice for all kinds of music enthusiasts. This amplifier features all 4 channels providing top quality sound and two sets of preamp outputs for giving you full control

The Lanzer VCT 4110 is specially designed from the bottom to provide quality sound in the strong form factor. A Hz-250Hz Heritable Low Pass: 40Hz -250Hz Input Level Gain Control: 6V200MV Bass Boost Boost Boost Switch, so your speaker will always be provided with high audio.

To improve your music, this product features low/high pass variable crossover for efficiency and precise control. Speaker/subwoofer terminals guarantee high conductivity and minimal signal loss. Lanzer VCT4110 2000 Watt best 4 channel car amplifier Powerful Amplifier High-performance output is equipped with metal oxide semiconductor field-effect transistors for quick switching to full immobility.

Lanzar VCT4110 2000 wat 4 Channel Car Amp


  • Full range crossover
  • power supply


  • No subsonic filter



We do thorough research on topics and provide you with the best and most innovative information that will help you clear up any of your queries. So, keep in touch with us for additional light and live articles are being headed and we will include each of the solutions to your inquiries in them.

If you have upgraded other audio inside your car, the speakers will not be able to reach their full potential without using the proper car.  it totally depends on how much you can afford to buy 4 channel amp for your car.


Frequently Asked Questions ( FAQs)


Do amps improve sound quality?

Amp does not improve sound quality. They only raise the signal to the desired level. However, if the amplifier has parallel or signal processing capabilities, they can make it different and possibly more suitable for listening pleasure. But again, this amplifier is part of signal processing.

Why Do You Need a 4 Channel Amplifier?

A 4 channel amplifier enables you to upgrade your car stereo to its high altitudes, mids, and bows. Your car’s factory system can provide an amplifier, not a boss thumping louse or a crisp note. If you want more power in your audio system, you need to invest in the best 4 channel amp.

Is a 4 channel amp worth it?

If you need maximum power for speakers, 4 channel amplifier is the best option for you. A 1000 watt 4 channel amplifier works best for most people, if your car is big and you need more power, you can use 2000 watts or 3000 watts.

How many channel amp do I need?

You will need one amp for all the speakers in the car which means you will need more than one channel on the AMP. If the car has 4 speakers, one speaker will connect to each channel. Most cars have four speakers, so 4 channel amps are the most popular.

Do amps affect sound quality?

An amplifier improves sound quality in a number of ways. Amplifiers are primarily designed for volume editing, but they can also affect sound calligraphy and tone. Overall, the sound quality depends on the type of external factors, such as an amplifier, setup, room acoustics, among other factors.