Best 4 Channel Amp Review 2020

Alpine X best 4 Channel Amp
Written by prodigitalweb

Most of the 2 Channel amps can run mid range speakers at the maximum of 2 Ohms to maximize the stereo effects. Since they have only two channels you cannot get the fading effects in it. Whereas a best 4 channel amp can deliver music to the front left, front right speakers, and rear left and rear right speakers. Besides, the stereo and fading effect is excellent with this amplifier. Simply the 4channel amplifier is nothing but a combination of two 2 channel amplifiers. Let us see best 4 channel amp here in this post.

Do you want to have a speaker that can offer you the best sound quality in your car? Then, you should use a 4 channel amplifier. You can see a lot of use of it in cars nowadays. These amplifiers are available in different sizes, shapes, and power outputs.

Here, we have listed the top best 4 channel amps of 2020. Let’s have a look at those.

List of Best 4 Channel Amp:

  • Planet Audio AC1200.4 4 Channel Car Amplifier
  • Rockford Fosgate P600X4 Punch
  • Crunch PowerDrive PD1000.4 Amplifier
  • Rockford Fosgate R400
  • 2.1 Bluetooth Marine Amplifier Receiver
  • Alpine MRV-F300 4-Channel Car Amplifier
  • Alpine X-A70F X-Series 4/3/2 Channel Power Density Amplifier

Best 4 Channel Amp

Planet Audio AC1200.4 4 Channel Car Amplifier – 1200 Watts, Full Range, Class A/B, 2-4 Ohm Stable, Mosfet Power Supply, Bridgeable 

Planet Audio AC1200.4 4 Channel Car AmplifierIf you want to buy the best 4 channel amp,then purchasing this one can be the right choice for you. The type of amplifier belongs to the Class A/B category. With the help of this amplifier, you can get the clearest and loudest music ever. It features a MOSFET power supply that can deliver the best performance when it comes to say about the sound magnification. If you are searching for the best 4 channel amplifier, then you must choose this amplifier.


Decreased distortion with improved sound quality: As it is a class A/B amplifier, therefore this amplifier can offer a clear and loud sound quality. It has an exceptional linear circuit that helps to decrease distortion. But it happens when the power output and sound quality gets increased.

More power and volume: The stability of this amplifier is 2 ohm. It means that the impedance that the amplifier can accept is up to 2 ohms. This amplifier helps to turn the low voltage signal into a higher input signal so that it can power a pair of speakers.

Versatile use: This innovative model supports both high and low-level inputs. It allows you to use it to make a custom audio system. Therefore, you don’t need to use the old speakers in your car now. The amplifier becomes more versatile due to having the Switchable Input Sensitivity.

Energy efficient: MOSFETs stands for Metal Oxide Semiconductor Field-Effect Transistor. People use these transistors to amplify a signal or as a switch. If you want to use transistors for enhancing the sound quality in your car, then this type of transistor can come to your favor. It is very helpful as it consumes less power to run.


  • Boosts the sound quality.
  • Thermal protection
  • Nice build quality
  • Durable
  • Easy to install
  • Affordable price range
  • Low pass filter


Power, ground, and remote cable plastic connection is unavailable.

Rockford Fosgate P600X4 Punch

Rockford Fosgate P600X4 PunchWhether you want to power the audio system in a versatile way, then buying the Rockford Fosgate P600X4 Punch will be a smart choice for you. Here, you can connect both 2 and 4 channel amplifiers to make a high power 2 channel amp. Besides, it contains variable HP/LP crossover and built-in Punch EQ.

This amplifier can accept inputs from many sources. The range of the input that the amplifier can accept is from 150mV up to 12 volts. The lowest input range is 50mV, and the highest input range is 2 volts. If you want to buy an 8 track amplifier, then it can be a perfect option for you.


Multi-signal inputs: The amplifier can accept both low or High level audio signals. Here, you don’t need to take the help of a signal converter.

Sound quality: This amplifier can deliver a high-quality soundscape. In case you should have strong 2 ohm speakers, then it will push 150 watts through each channel.

You need to consider one thing before buying, i.e., you must not purchase this amplifier if you are using speakers of 4 ohms. It can only push 75 watts per channel. This amplifier is one of the highest rate amplifiers in this list.


  • Easy to set up
  • 150 watts each channel at 2 ohms


  • A little bit expensive

Crunch PowerDrive PD1000.4 Amplifier -Class A/B, 4 Channel, 1000-Watt, 1/2/4 Ohm, Car Amplifier, Heat Sink, R.C.A., L.E.D. Diagnostic System, Low Noise Circuitry

Crunch PowerDrive PD1000.4 best 4 Channel AmpAre you searching for a big amplifier that can give you the ultimate benefit? Then, Crunch PowerDrive PD1000.4 Amplifier can deliver you the best performance in this case. We can assure you that it is the biggest PowerDrive amplifier that you have come across.

It can enhance the sound quality of your car with its 2000w M.A.X. power. It uses a Q.T.D (Quick Thermal Dispersion) , technology that helps to keep it cool instead of high power capabilities.


LOW NOISE PREAMP CIRCUITRY – As soon as you will use the amplifier, it will transfer the low voltage signal from the source unit. It further offers minimal distortion with the help of the amplification process.

4 operation modes: These operation modes help you to get better sound quality for sure. Dual Stereo Bridged, Stereo and Bridged Mono, and Dual Bridged Mono mode helps to monitor all the working functions. Besides, it also has a convenient DIAGNOSTICS LED System that protects the operational modes.

HEAT SINK – This Crunch PowerDrive PD1000.4 Amplifier comes with a heat sink that can prevent it from overheating. It is Quick Thermal Dispersion Technology that helps to keep the amplifier running cool. It doesn’t allow anyone to detect distortion noise at the time of normal music listening.

Distortion: You can decrease distortion by using the amplifier at low voltage. It can ensure that you will get the clearest sound even at high volumes. Here, you can get high-quality materials that can generate powerful sound connections. As a result, you can enjoy a flawless listening experience.

O.E.M. audio systems: Do you want to increase the quality of the O.E.M audio system. And for this, you just need a compatible amplifier. This Crunch Power Drive amplifier can give you benefits in this case. It contains different types of inputs that allow you to connect it easily with any kind of stereo.

Class A/B topology: We know the Class A/B amplifiers are more power-efficient. Compared to class A amplifiers, it can generate high-quality sound. This amplifier contains a linear circuitry that helps to decrease distortion. Besides, it can boost power output.


  • Heat sink Q.T.D. technology that makes the amplifier cool
  • LED system that acts as a circuitry protection
  • Low/no distortion in sound
  • Effective connection terminals
  • Nickel-plated brass


  • The second battery is unavailable

As it comes with enough power that can crank up components and low-distortion, therefore it is perfect for you to deliver the louder music.

Rockford Fosgate R400-4D Prime 400 Watt Full-Range Class-D 4-Channel Amplifier

Rockford Fosgate R400 best 4 Channel Amp

If you want to buy the best 4 channel amplifier that you can get within a cost-effective price range, then your searches come to an end here. This amplifier contains a class-D circuit that can provide ultra-efficient sound amplification.

By using this amplifier, you can increase the power of speakers. It helps you to power the tweeters in the dash and front doors.

The brand mainly focused on Prime Class D amps. If you buy an amplifier from this company, you will get more power per square inch than other amplifiers. We are assuring you that this Rockford Fosgate R400-4D Prime 400 Watt Full-Range Class-D 4-Channel Amplifier will give you loudest music power ever.


Multiple options for improving the car’s audio: It sends 75 watts to each of your speakers, and uses the front channels for the front speakers. After that it bridges rear channels to run a subwoofer with up to 400w R.M.S. You can even bridge the amp to 2-channel mode to run a pair of subs.

High durability: Most people prefer to buy this amplifier as it is immensely durable. You can see here a 2-position phase that can turn the amp from 0 to 180 degrees. Besides, it consists of heavy cast aluminum that can prevent the amplifier from overheating. Therefore, the amplifier doesn’t get damaged easily and runs for a long time.


  • Good sound quality
  • Highly durable
  • High-efficiency power
  • Weighs lighter compared to others


  • Support merely 4-ohm load

2.1 Bluetooth Marine Amplifier Receiver –

Bluetooth Marine Amplifier Receiver

2.1 Bluetooth Marine Amplifier Receiver – Waterproof 4 Channel Wireless Bridgeable Audio Amp for Stereo Speaker with 1000 Watt Power Dual MOSFET Supply, GAIN Level, and L.E.D. Indicator – Pyle PLMRA430BT

Do you want to buy a 4 channel amp that can fit with your budget? If yes, then this amplifier is perfect for you. This waterproof amplifier comes with an all-in-one package.

Most people who have already used this amplifier gave it positive reviews. According to them, it is a multi-channel bridgeable amplifier that can offer superior sound performance. It has an excellent Bluetooth connectivity ability.


High power efficiency: When you buy this amplifier, you can find it using MOSFET power. With the help of this feature, the amplifier consumes less amount of current. People use it in highly efficient power supply systems to get a clear sound.

In-built delay circuitry: Sometimes, we can see a loud thump sound at the time of turning on a power amplifier. It happens because of a sudden heavy current discharge. But you don’t need to worry. This amplifier comes with built-in circuitry protection that can prevent such issues.

Overheating protection: When you use a high-power4 channel ampit can cause the system to overheat. But this amplifier contains an aluminum heat sink that can prevent it from getting overheated. Therefore, the amplifier remains cool.

Music Streaming: It is a unique feature of this amplifier. By connecting the amplifier to your phone, you can now enjoy your favorite music. This Bluetooth wireless music streaming quality can support iPhone, Android smartphone, iPad, tablet, MP3 player, etc. We can assure you that you must get an outstanding listening experience after using it.


  • Waterproof
  • Superior quality circuit
  • Thermal protection
  • Bluetooth wireless music system


  • The sound gets reduced at the time of connecting Bluetooth.
  • Bright flashing LEDs

Alpine MRV-F300 4-Channel Car Amplifier, 50 Watts R.M.S. x 4 

Alpine MRV-F300 best 4 Channel Amp

If you don’t have enough space in your car to set-up an amplifier, then you can choose this 4 channel amp. It is small in size and weighs light also. It has decent power, a hustle-less setup, and great sound amplification.


Increased power efficiency: This 4 channel amplifier comes with super-fast switching technology. It helps to increase the power efficiency of the amplifier. As a result, it consumes less power and generates less amount of heat. Besides, you don’t need to supply a huge amount of power to this amplifier.

Audio controls: It has a few crossover functions that allow you to use it without facing any hassle.

Performance and sound quality: Alpine MRV-F300 is the best amplifier as it can provide the users a loud and clear sound quality.

Bridgeable: As both of the front and rear sections of this amplifier are bridgeable, therefore we can use it as a 4-channel, 3-channel, or 2-channel amp.

Auto Turn-on: With the help of the speaker level input, an automatic circuit turns on the amplifier. It turns it on when it senses an input signal.


  • Small in size
  • Compact design
  • Built-in crossovers for flexibility
  • Bass EQ can easily support on channels ¾


  • Hard to install as the mounting tabs face inward.

Alpine X-A70F X-Series 4/3/2 Channel Power Density Amplifier 

Alpine X best 4 Channel Amp

This power density amplifier is the best performing amp on our list. Although the Alpine is a costly brand, it is the leading one in the entire automotive audio market. It can offer 120 watts of R.M.S. power in each channel at a rate of 4 ohms impedance.


Channel Design: It is a 4-channel amplifier that also has the configuration for 3-channel or 2-channel performance. It remains stable when it is connected with a 2 ohm amp.

Ultra-Wide Frequency Response: The Alpine X-A70F comes with a wide frequency range for various sound quality.

Logo Badge: You can see four bright white LEDs in the amplifier.

Crossovers: This amplifier provides independent crossovers for the front and rear channels. Off, HP, LP– these are the three crossovers that you can see here. Besides, it comes with a rotary cutoff frequency control that has frequency from 50Hz to 400Hz. Each crossover consists of a slope of 12dB per octave.

Optional Remote Bass Control: It features an RJ-25 modular jack. You can get here a Remote Bass Level Control by which you can control the rare channels.


  • Easy to use settings
  • Zero distortion
  • Crossover is active
  • Clear sound


  • A little bit expensive


We have enlisted the top seven best 4 channel amps in this article. Some of them are very useful, whereas some of them are unique. In fact, some 4 channel amps can offer the best performance also. The amplifiers that we have given have versatile uses. Overall, if you want to know about amplifiers, then you must check this article.

Frequently Asked Questions:

  • What do you mean by a 4 channel amp?

A 4 channel amp means a combination of 2 channel amplifier that come in one package. It allows users to run it in a 4 Ohm stereo load on High Pass. Now, you don’t need to pair it with four speakers. You can pair a four-channel amplifier with two speakers and with a subwoofer. It means that you can pair two speakers and two channels to connect those with the subwoofer.

  • What is the difference between 2 and 4 channel amp?

Many people think that it is the quality that differs both of these two. They think that a 4 channel amp is better according to quality compared with a 2-channel amplifier. But it isn’t true. The number of the channel that connects with the number of speakers plays a vital role here. It is the factor that makes these both channel amps different from each other. However, a 4 channel amplifier can connect with more speakers than a two channel amplifier.

  • How many speakers can a 4 channel amp power?

Usually, the external amplifiers power more than a speaker in each channel. If you take a 4 channel amp, then it can power up to 8 speakers. But it depends on the process of setting it up. It is the first thing that you need to make sure.

  • Can you use a 4 channel amp for 1 sub?

Most people prefer to use the four-channel amp. You can connect it with four speakers or two speakers and a sub.

  • Is 4 or 8 ohms better?

If you want to use any of them, we will recommend 8 Ohm for you. Usually, a 4-ohm speaker needs more power to offer the same sound quality than an 8-ohm speaker. It depends on the voltage, current, and resistance. These three factors play the leading role in this case. If an amplifier has low impedance, then it means that it consumes a vast amount of current.

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