Top 10 Best 4 Channel Car Amp for Sound Quality Reviews & Buying Guide [2021]

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I think you are looking for the Best 4 Channel Car Amp for Sound Quality


You have reached on the right website because our team spends hours to find the best 4 channel car amp for sound quality for you because if you want to listen to the solid, loud song, then the amplifier is an absolutely necessity. Amplifiers just bring life to the songs.

These days, the car amplifiers have a large range of power outputs, sizes, and shapes. You may see 1 to 6 channels amplifiers, however, the 4-channel amp is most widely recognized since the majority of cars are prepared with the four speakers. The 4-channel amplifier empowers to listen to excellent sound quality as to increase the power to the speakers and subwoofers. 

However, there are many 4 channel car amplifier reviews to choose from, this is a hard choice, so in this article, we have described top 10 best 4 channel car amp for sound quality with their key features, pros and cons So that, you can buy the best one in them for yourself.      

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What is the best 4 channel car amp for sound quality? 

 The 4-channel amplifiers are very well known these days for the music fans. This kind of amplifiers has 4-output which can power 2 up to 4 subwoofers and speakers. The four-channel amplifier is able to hook up easily in every entry-level sound system in the marketplace. A few items have control characteristics which let you change the sound manner in which you need them to. 

How does 4-channel car amplifier work?

A four-channel amplifier is an appliance which receives as well as amplifies electrical signals. This sends these signals to the channels which are received through the speakers. This can be tweeters, subwoofers, or 6 x 9. 

An amplifier distributes equivalent power to every one of 4-channels. A few amplifiers have the capability to join all together power from numerous channels by the procedure called “bridging”.   

Below-Mentioned are The Top 10 Best 4 Channel Car Amp for Sound Quality

10. JL Audio XD4004v2 4 channel car amplifier

4 channel car amplifier reviews

Best 4 Channel Car Amp for Sound Quality

The JL Audio is a stereo industry leader and known internationally for hard-hitting power, brilliant sound, and the absolutely the finest engineering. Its approach for making ultra-effective class D amplifier was to adopt the normal approach to amplifier design plus throw this away and utilized their matchless NexD circuitry that utilizes a much rapid switching rate than the low-end amplifiers do. 

Its result is a lot of lower noise levels and enhanced power delivery. As much as the quality of sound goes, this four channel car amplifier is one of the perfect modern car amplifiers that you can purchase. This XD400/4v2 is the best designed and the best sounding amplifiers in its group. Its crossover qualities are made facing top for a simpler way to contact them in numerous systems.    

You will require built-in hex wrench to loosen and tighten first-class wiring terminals. This is the best car amplifier for sound quality! Its 2/4 channel button permits driving an entire back and front system without the requirement for back RCA inputs. 

Key Features

  • 4-channel amplifier
  • Class D Amplifier
  • Bridgeable (200-W RMS × 2 @ 4-Ohms)
  • Great power (75-W RMS × 4, 100-W RMS × 4)
  • Movable 50-500Hz high/low pass crossovers
Pros (Why Should Buy):
  • Compact size – installable under the seats
  • Fantastic quality of the sound
  • First-class power and quality
  • High-level inputs of speaker
  • Good buyer ratings
  • 4-gauge wire ability
  • Black powder and brushed aluminium coating finish
Cons (Why Should Avoid):
  • A little expensive


09. Rockford Fosgate P600X4 4-Channel Amplifier

4-channel amp rockford fosgate

Best 4 Channel Car Amp for Sound Quality

This Rockford Fosgate P600X4 is also a 4-channel amplifier. This is excellent 4-channel amplifier for quality of sound in the market. An amp is fired through the 2-Ohm battery. Its size is 12 × 19.3 × 5.8-inches. This has a comparatively bigger size however still installs into the majority of cars. Additionally, this has 13.8-pounds weight.  

This 4-channel amp rockford fosgate utilizes batteries; the power consumption is a lot of lower. Moreover, it utilizes 112-volt batteries. Although this amplifier has a large size this fits into the majority of cars and performs well with the stereo.

Generally, this 4 channel amp for car is an excellent car amplifier that is available on the reasonable cost as per size and quality. This performs easily with stereos of the most of vehicles and installs well also. With the utilization of this item, the quality of sound of stereo gets better with improved bass, increase volume, etc. The main issue with this product is that this is a little expensive.

Key Features

  • 4-channel Amplifier 
  • 13.8 pounds of weight 
  • Size is 12 × 19.3 × 5.8-inches
  • Muted turn on 
  • RCA pass-thru outputs 
  • Over-current protection 
  • Short circuit protection
Pros (Why Should Buy):
  • Great quality of sound
  • Easy to install
  • The great value of money
  • Installable in the majority of vehicles
  • Good manual
  • Great buyer rating
Cons (Why Should Avoid):
  • Remote bass adjustment handle not included


08. Kenwood KAC-M3004 4-Channel Digital Amplifier

best 4-channel amp under $200

Best 4 Channel Car Amp for Sound Quality

The Kenwood KAC-M3004 is a 4-channel digital Amplifier which is a highly reliable product. This 4-channel amplifier probably won’t pack much power, however, this generates productive sound output. This 4 channel car amplifier is a high genius and rated like a Class-D amp. This amp signifies highpoint of efficiency of the amplifier, getting efficiency rates proof north of the 90 percent.    

The compactness of this 4-channel digital amplifier permits tiny amp to install everywhere in your car; in fact, this is sufficiently little to install in the glove section. This is practically unbelievable to imagine that the tiny amplifier is able to drive subwoofer systems and 4 speakers at once. 

Its RMS is 50-Watts per channel; you can rely on this amplifier whenever you require listening to everything even noise of the traffic, motorcycle, and even road every time you want to travel. This small 4 channel car amp can also be installed on the majority of bikes even the internal side of the storage compartment. Accordingly, you can begin looking forward to the broadcasts and fantastic music whenever the requirement arises. It is the best 4-channel amp under $200.

Key Features

  • 4-channel amplifier 
  • Class D amplifier 
  • Compact size 
  • 600-Watt 4-channel amplifier
  • RMS 75-Watts at 20-Ohms and 50 at 4-ohms
  • The frequency range is 20-Hz to 20-kHz

Pros (Why Should Buy):
  • Excellent sound quality
  • Durable
  • Compact size
  • Simple to wire up
  • Lightweight
  • The great value of money
  • Comes with warranty
Cons (Why Should Avoid):
  • A little expensive


07. Kenwood 1177524 Compact Marine/Automotive Amplifier

best car amplifier for sound quality

Best 4 Channel Car Amp for Sound Quality

The Kenwood 1177524 is a Bluetooth 4-channel amplifier which can handle the whole audible frequency range from sub-bass to the upper-treble. So, this is made to perform with regular subwoofer and speaker. Its peak power is 400-watts and RMS is 180-Watts. 

This Bluetooth car amplifier has 90 dB frequency range and if you require a little extra power for connecting a subwoofers pair, then you can connect amplifier into the 2-channel mode that will knock up RMS in every channel to the 90-Watt (Total RMS 360). 

This Kenwood 1177524 amplifier has Apt X-supported Bluetooth. In case you are an audiophile just like me, you will incredibly appreciate how fine this assists to preserve the original music quality. 

This 4 channel Bluetooth car amplifier is a great value of money and has an advance function of the Bluetooth. You will be able to connect Bluetooth easily and can be connected easily to the amplifier. It has a conformal coating that is a kind of polysynthetic film which is water and dust resistant.     

Key Features

  • 4-channel Amplifier 
  • Wireless control 
  • Compact design 
  • The frequency range is 90-dB
  • Bluetooth technology 
  • Class D amplifier 
  • Peak power is 400-watts 
  • RMS in every channel to the 90-Watt (Total RMS 360)
Pros (Why Should Buy):
  • Dust and water-resistant
  • Compatible with subwoofers and speakers
  • RMS is 45-Watts
  • Bluetooth functionality
  • Small and compact size
  • Easy mounting
  • Water and dust resistant
Cons (Why Should Avoid):
  • Might not have sufficient power to power the big speakers


06. Rockford Fosgate PBR300X4 4-Channel Amplifier

4-channel amp rockford fosgate

Best 4 Channel Car Amp for Sound Quality

The Rockford Fosgate PBR300X4 is 4-channel Amplifier. This is definitely the best vehicle amplifier in the market. This combines amazing sound and great sound clearness into the versatile tiny power Amp. This 4 channel amp car audio has excellent heat management ability, both low and high-level inputs and this additionally has a discrete exterior mount for ideal power usage.    

This 4-channel amp Rockford fosgate has overall RMS 300-Watts that is sufficient power for fulfilling the interior space of your car with a piece of excellent sounding music. It belongs to the class BR, its mean “boosted Rail”. This is an advance technology which comprises of fast-speed circuitries and using capacitors to boost power supply voltage of amplifiers.    

This technology permitted the Rockford Fosgate for making powerful Amp than installed almost everywhere. It is very simple to install and need a small space for installation. Therefore, if you are searching for the great investment at that point the Rockford Fosgate PBR3—X4 will be the best selection for you. 

Key Features

  • 4-channel amplifier
  • BR Class amplifier
  • Frequency response is 20-Hz to 20-kHz
  • Size is 6.8 × 4.2 × 1.5 inches
  • RMS is 75-Watts × 4 at 4-Ohm
  • Low and high-level inputs
  • Dynamic thermal management 
Pros (Why Should Buy):
  • Durable
  • User friendly
  • Comes with warranty
  • Great sound quality
  • The incredible value of money
Cons (Why Should Avoid):
  • None


05. Alpine KTP-445U Amplifier

4 channel car amplifier

Best 4 Channel Car Amp for Sound Quality

The Alpine generally delivers when manufacturing a vehicle stereo item and it is greatly vehicle stereo amplifier. This is a super-compressed model vehicle sound amplifier which surprises with huge sound this will assist you with getting from your back and front vehicle speaker system.    

Do you have place constraints in the vehicle and consider this will be difficult to fit amplifier on stereo setup? Guess again. This small 4 channel car amp has taken up just 8″ × 2” × 3” of area. It’s mean this can also be mounted below the seat if essential. 

This puts out an extremely satisfactory 45-Watts of power every channel and this very well may be arranged for filtering out a broad range of frequencies as well.  

It also has the greatest signal to sound ratios that you will buy. This best 4 channel car amp for sound quality also incorporates wiring harness with auto-sensing and RCA speaker connections. It is a great value of money and very easy to install in your car.

Key Features

  • 4-channel Amplifier
  • Class D amplifier
  • RMS 90-Watts × 2 bridged at 4-ohms
  • RMS 45-Watts × 4 at 4-Ohms
  • Size 7-7/8-inch W × 1-1/2-inch H × 2-9/16-inch D
  • Dynamic response/High output
Pros (Why Should Buy):
  • Powerful
  • Great quality of sound
  • Versatile frequency filtering
  • 45-Watts each channel power × 4 at 4-ohms
  • Incredible signal to sound ratio
  • Auto-sensing Speaker-level & RCA connections
Cons (Why Should Avoid):
  • Built-in instruction require improvement


04. BOSS PH4.600 Phantom Remote Subwoofer with Amplifier 

best budget 4 channel amp

Best 4 Channel Car Amp for Sound Quality

The Boss is a Japanese organization which has been specializing in a wide range of musical accessories and equipment since 1973. It has a speciality of giving amplifiers which bring high, full quality sound. It makes an incredible, well-rounded collection of audio components of the vehicle.

This Boss PH4.600 is a strong amplifier at a reasonable price. The Boss PH4.600 creates a list for a combination of quality and price. This majority of retailers, this best budget 4 channel amp can be bought for under the $110. It built-in low- and high-pass filters, so you will be able to adjust output and acquire the most ideal sound of the system.

You will also be able to dial up to 18-dB of the bass boost that will consequence in another dimension attached to the listening experience. According to some reviewers, this best 4 channel car amp for sound quality rapidly switches to the security mode that is an excellent thing of sound quality you experience in the car.     

Key Features

  • 4-Channel Amplifier
  • A/B Class Amplifier
  • 4-Ohms is 1200-Watts × 2
  • Max Power at 2-Ohms is 600-Watts × 4
  • RMS Power at 4-Ohms is 240-Watts × 2
Pros (Why Should Buy):
  • Affordable and well build
  • Easy to install plus control
  • Range of the frequency response is 9 to 50,000-Hz
  • Protection mode available from the hotness
Cons (Why Should Avoid):
  • A bit big size


03. Alpine MRV-F300 4 Channel vehicle Amplifier

Best Car Speakers Reviews

Best Car Speakers Reviews

The Alpine brand is making the top-quality sound tools for decades. Actually, the Alpine is the main brand on the list for capturing 2 spots. Just for the amplifier, the Alpine put out the ideal 4-channel vehicle amplifier for the rear acoustic and front door speakers.

Its crossover frequency range is 50-to-400 Hz; the lower sound will be going to the subwoofer or woofer than with the majority of the further amplifier on the list, however, the subwoofer’s power requires no additional 100-Watt. 

Additionally, this four channel car amplifier includes the best THD which can find as low as 0.03%. Relying on the configuration however running the 4-channel setup will bump which up to the extra standard one percent. All things considered, with a genuinely compact profile plus class D circuitry, power consumption and heat won’t be more issue.  

What might be an issue, in any case, is background noise that is genuinely low at 81-dB. Overall, This best 4 channel car amp for sound quality will still create the ideal performance for excellent sound for the buck; however, the buck is a little high everything should be considered.

Key Features

  • 4-channel vehicle amplifier
  • Weight is 6.4 pounds
  • Size is 13 x 9.1 x 4.3 inches
  • RMS 50-Watts × 4 at 4-Ohms (RMS 75-Watts × 4 at 2-Ohms)
  • RMS 50-Watts × 2-bridged output at 4-ohms (The 4-Ohm constant in the bridged form)
  • Variable low/high pass filter (50 to 400-Hz, 12-dB)
  • Fuse Rating is 40A × 1
Pros (Why Should Buy):
  • Compact profile
  • Excellent THD ranges
  • Smooth to work
  • Durable
  • Great quality of sound
  • Does not get hot
  • Easy to install
Cons (Why Should Avoid):
  • No warranty its physical break


02. MTX Audio THUNDER75.4 Thunder Series Car Amplifier

Best Car Speakers Reviews

Best Car Speakers Reviews

The MTX Audio THUNDER is just like a Rockford, it also gets repute by generating first-class sound systems, however regularly at a very reasonable cost. Consequently, it is the situation here, like Thunder series 4-channel amplifier captures our perfect all-around value period. 

To start with, this amplifier pushes lots of power with RMS 100-Watts at 2-Ohms and an amazing RMS 75-Watts at the 4-Ohms. Additionally, this best 4 channel car amp for sound quality includes the outstanding soundscapes and frequency range is 15-Hz to 25-kHz which is around 5-Hz lower than normal and 5-kHz superior to the normal. 

At last, it is just 1 of 2 amplifiers on the list of this Article, the other great performer is Alpine, to include the THD under 1%. But this is a little expensive amplifier.     

Key Features

  • 4-channel vehicle amplifier
  • 75-Watts RMS × 4 at 4-ohms (RMS 100-Watts × 4 at 2-Ohms)
  • 200-Watts RMS × 2-bridged at 4-ohms
  • Frequency response is 15-25,000-Hz
  • AB Class Amplifier technology
  • Preamp inputs
Pros (Why Should Buy):
  • The frequency range is 15-Hz to 25-kHz that is great
  • Generate high quality of sound
  • Never become hot
  • Easy to install and mount
  • Powerful amplifier and compact design
  • Portable, durable and lightweight
Cons (Why Should Avoid):
  • Congested panel


01. Pioneer GM-D8704 4-Channel Bridgeable Amplifier

Best Car Speakers Reviews

Best Car Speakers Reviews

The Pioneer GM-D8704 is a 4-channel amplifier which is able to send RMS 100-Watts to every your rear and front speaker, you should buy it for incredible music and Rockin to your car. This pioneer car amplifier has highly effective D Class technology which keeps this amazing amplifier operation as cool as this appear and permits for the smallest frame which installs in lots of out of way areas.  

In case you are making a major system in the stages then you should utilize this versatile amplifier at first to drive the speakers’ pair with front 2 channels when bridging back channels together for powering the subwoofer with RMS 300-Watts. 

Afterwards, you will be able to get Pioneer’s large mono amplifier for driving your subwoofers and switch the amplifier over to run every one of the four of the full-range speakers. If the stereo does not include the RCA outputs, then you will be able to utilize speaker-level inputs for hooking the amplifiers into the system. 

This best 4 channel car amp for sound quality switches input mode robotically while this identifies the top signal. Additionally, this built-in low- and high-pass filters, which helps you to adjust the sound for the interior of your car, whether you are driving subwoofers and speakers.     

Key Features

  • 4-channel vehicle Amplifier 
  • RMS 125-Watts × 4 at 1-Ohm
  • The RMS 100-Watts × 4 at 4-Ohms (RMS 150-Watts × 4 at 2-Ohms) 
  • RMS 300-Watts × 2-bridged at 4-ohms (RMS 250-Watts × 2-bridged at 2-Ohms)
  • Variable low- and high-pass filters (12-dB for every octave)
  • Preamp outputs and inputs
  • D Class full-range technology 
  • The fuse rating is 30A × 2
Pros (Why Should Buy):
  • Great quality of sound
  • Excellent D Class Technology
  • Budget-friendly amplifier
  • Powerful and portable
Cons (Why Should Avoid):
  • None


Buying Guide of the Best 4 Channel Car Amp for Sound Quality

Purchase an amplifier for supporting your cars sound output is an excellent choice. Why? Because everybody wants to hear great music. Though, many things should be noted before taking the final decision. 


You have to ensure that the amplifier you buy is perfect with ohm load which you should write this up to. In case you overload your amplifier then you will kill this.

Extra power is good

You must think about the RMS of the subwoofers and speakers. The increased amplifier power will consistently add depth and richness to the songs without creating distortions.  

Quality plus heat dissipation capacity

The materials quality utilized goes far in choosing what amplifier can’t and can do. Amplifiers without an appropriate heat dissipation method effectively power down or burn out till this cools off, ruining the experience. 

The Product Size     

Continuously check dimensions of amplifiers to make sure this fixes where you need to fit in the car.

The quality of sound

Usually loud is not match to appropriate sound output. You may never utilize “loud” ever in any case. This is more essential to check its features such as frequency response, sound filters, the ratio of sound to noise, possible noise deletion features, and total harmonic distortion. It provides you with a pointer in respect of what quality of sound to expect the amplifier of your car delivers. 


The bridge presents you a chance to utilize 2 channels collectively in a single load. The reason behind it is so every channel creates more power. For instance, if you want that one channel having a 300-Watts output, you are able to connect 100-Watts for each channel. For connecting an amplifier, though, you will require speakers to have a dual impedance of lowest load rating.

The procedure of installation 

To install easily is normally better. It saves your money also because you do not need to employ an expert for installing the amplifier in your vehicle. Additionally, ideally, purchase the 4-channel vehicle amplifier which has an installation guide in detained and has all needed component for full installation.  


Although resistance is a very technical feature, this might not. Making an extraordinary sound system is everything about producing synergy. For this situation, synergy is made through matching the speakers with exact amplifier. 

Check power handling of your speaker and diverse output ratings of the amplifier. This is incredible to join speakers having high impedance to an amplifier however you do not need to hook up speakers having low impedance, state 4-ohms, with the amplifier which specifies 8-ohms least impedance. 

Installation space vs. amplifier size available 

Everybody should consider the size of the amplifier etc. this is really easy – you want to buy an amplifier that will be able to install into existing space. If there is a huge SUV, size might not be a very limiting factor. However, if there is a little, pretty Roadster presenting with no more place for installation of additional sound equipment. 

Therefore, you require an amplifier which can install in the tight places. In this article, we have described many micro or compact amplifiers so you will be able to buy the perfect sized amplifiers to install in your vehicle. 

Built-in low- and high-pass crossovers

These make this easier and possible to tailor the sound system exactly as you would prefer. If crossovers are flexible, the amplifier will be better. However, adjustability is definitely not a key point.

Excellent terminals

Perfectly, an extraordinary amplifier must have first-class terminals which are very easy to join the speaker and power. The terminals must stay well-connected plus secure in every application.             

FAQs about the Best 4 Channel Car Amp for Sound Quality

Why do you require the best 4 channel car amp for sound quality?

You have to include an amplifier to the car sound system for getting additional power of the subwoofers and speakers and better quality of sound. 

Which kind of amplifier should buy?

There are various kinds of vehicle amplifiers in the market. Before purchasing, you should know which kind of amplifier appropriate to your listening requirements. The amplifiers’ types incorporate mono amplifiers that have single output channel, 2-channel amplifiers with 2 outputs which generally power a couple of speakers.

And there are 4-channel amplifiers which can power numerous sets of the speakers and are able to utilize to power the full-range speaker, finally, 5-channel amplifiers which have 4-channels that are able to power rear and front speakers and its fifth-channel for powering the subwoofer.

Which size of amplifier you should buy?  

Prior to purchasing, ensure that the choice of the amplifier must be installed in the car. Few popular areas incorporate under the seat, the trunk, or against traveller side firewall. In this article, our team provided a directory of the best 4-channel amplifiers which you able to check on the bazaar today: 

Class D or Class A/B amplifiers: which one is best?   

We will provide you with the data for helping you to choose. The majority of Class A/B amplifiers are about 50% efficient although class D amplifiers are almost 90% efficient. The class D amplifiers are designed to install in very littler chasses.  

The Class A/B amplifiers provide out a little more clear sound than the Class D amplifiers. We trust you are presently better educated on hoe should select the best amplifier as well as will be making an excellent system for getting more pleasurable listening experience. 

How is 2-channel amplifier diverse from the 4-channel amplifier? 

The majority of individuals get confused through the 4-channel amplifiers can be utilized as a 2-channel amplifier. To understand its difference clearly, see the 4-channel amplifier as the grouping of 2 2-channel amplifiers in the compact home.  

You are able to connect the amplifier to utilize 2 or 3 channels relying upon your necessities. In this way, compares to the 2-channel amplifier, the 4-channel amplifier provides you with additional flexibility as to the quantity of the speaker you are able to utilize.   

How many speakers can I connect to the best 4 channel car amp for sound quality?

The quantity of speakers every amplifier can power relies upon how to wire your amplifier. With the right wiring, the external amplifier can be set up securely to provide as much as the double RMS power rating. Regularly, the majority of external amplifiers can power the numerous speakers for each channel.

The 4-channel amplifiers are able to power 8-speakers if wire this accurately.

First of all, check specifications of the amplifier to notice that amplifier is the 2-Ohm stable. In that case, ensure you or your selected expert amplifiers are able to set the 4-channel amplifier safely with extra than 4 speakers. 

Below mentioned are ways by which you will be able to utilize the 4-channel amplifier with many speakers.

Connect 2 pairs of the speakers having 4-ohm with an amplifier for providing this 2-ohm load. Then connect single speakers pair on front of the amplifier (the Amplifier provides 4-ohm load), then the further 2 speakers on the backside of the amplifiers (the Amplifier give 2-ohm load).  

While the amplifier is working at 2-ohms, the speaker get louder and receive extra power contrasted with when amplifier works at 4-Ohms   

Is the 4-channel amplifier sufficient for subwoofers?

If you have subwoofer which also requires powering, remember that the subwoofer to amplifier connections are unique to the speaker-to-amplifier connections.  

Since subwoofers require significantly extra power than the speakers, you should connect 2-channels into a single for the subwoofer. 

How would you do this?

You should connect +ve wire from subwoofer to +ve lead of single-channel on the amp and –ve wire to –ve lead of different channel of the amplifier. It’s mean you will be able to power 2 subwoofers just with the 4-channel amplifier.


We have described the top 10 best 4 channel car amp for sound quality on your doorstep just in a click. You will enjoy the price value and get a double advantage of your investment. These best 4 channel car amp for sound quality are not just a product but proved a luxury in your life.

If you want to buy according to the suggestion of our team then you should buy the Alpine MRV-F300 4 Channel vehicle Amplifier which is explained on No. 03 and if you do not have much budget then you should buy Kenwood KAC-M3004 4-Channel Digital Amplifier which is explained on No. 08.

Finally, you should research from our highly rated list and make a shortlist of the best 4 channel car amp for sound quality model before taking the final decision we will welcome your feedback. Email us at

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