Best 4-Channel Car Amplifiers of 2017! (Unbiased, Expert Reviews)

4 channelThe 4 channel amps are quite a common type of amplifiers on the market. Versatile enough for most users they offer lots of possibilities for connecting four speakers at once or bridging two channels and connecting two speakers and subwoofer.

Sometimes, the 4 channel amps are the only way to go if you have limited space in your vehicle. Some advanced users use a combination of 4 channel amps to power speakers and a separate amp to power subwoofer. There are lots of options on the market and we will help you find the best 4 channel amp for your car and musical taste, just follow our product reviews.

High-Performance 4-Channel Amplifiers

  • 4.8 Customer Rating
  • ROCKFORD FOSGATE POWER SERIES T1000-4AD 4 CHANNEL AMPLIFIER
  • PRICE $$$$$
  • Dimensions : 14.7 x 8.2 x 2.2 inches
  • Impedance 250x4 @ 4 ohms 500x2 @ 2 ohms
  • Class : D
  • Watt : 1000 W
  • 3.7 Customer Rating
  • LANZAR OPTI250X4 OPTIDRIVE 2000 WATT 4 CHANNEL COMPETITION CLASS MOSFET AMPLIFIER
  • PRICE $$$$
  • Dimensions : 26 x 15.5 x 6.8 inches
  • Impedance 4 Ohms
  • Class : D
  • Watt : 2000 W
  • 4.4 Customer Rating
  • ROCKFORD FOSGATE POWER T400-4 400-WATT MULTI-CHANNEL AMPLIFIER
  • PRICE $$$
  • Dimensions : 13.7 x 8.1 x 2.1 inches
  • Impedance 60W x 4 @ 4-Ohms, 100W x 4 @ 2-Ohms, 200W x 2 @ 4-Ohms bridged
  • Class : A/B
  • Watt : 400 W
  • 4.2 Customer Rating
  • BOSS AUDIO PH4.600 PHANTOM 2400-WATTS FULL RANGE CLASS A/B 4 CHANNEL 2-8 OHM STABLE AMPLIFIER WITH REMOTE SUBWOOFER LEVEL CONTROL
  • PRICE $
  • Dimensions : 17 x 2.2 x 9.5 inches
  • Impedance 2-8 Ohm
  • Class : A/B
  • Watt : 2400 W
  • 4.5 Customer Rating
  • ALPINE PDXF6 / PDX-F6 / PDX-F6 4 CHANNEL 150W CAR AMPLIFIER
  • PRICE $$$$
  • Dimensions : 13 x 9.1 x 4.3 inches
  • Impedance 4 ohm
  • Class : D
  • Watt : 600 W

 

Rockford Fosgate Power Series T1000-4ad 4 Channel Amplifier

The Rockford Fosgate product is among the best on the market and this one is not only very high spec unit but one of the most expensive. However, it looks that this steep price is justified when you look what this amp has to offer.

First, the T1000 has a max output power of 1000 W which could be had as 250 x 4 at 4 ohms or 500 x 2 at 2 ohms. It also has DTM (Dynamic Thermal Management) for controlling the heat which amp produces and PEQ (Punch Equalization) – 18dB at 45Hz and/or 12dB at 2kHz.

Users reported that this amplifier has perfectly clear sound and big power so if you are looking for one of the best 4 channel amps and the money is no object, this could be it.

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Lanzar OPTI250X4 Optidrive 2000 Watt 4 Channel Amplifier

Lanzar OPTI250X4 Optidrive 2000 Watt 4 Channel AmplifierLanzar’s OPTI250X4 is interesting offering which comes in various power outputs from 1800 W all the way up to 8000 W. Today we are going to cover most common version with 2000 W output. It is nicely designed, a compact and affordable device which comes equipped with single-channel class-D amplifiers for greater power efficiency.

There are also several variable filters and boosting options, including a low-pass filter, subsonic filter, bass boost, and bass frequency. Important thing is that this amp has thermal, overload, and short circuit protection, so you know your equipment is safe and secure. Affordable price, good power and solid quality of components make OPTI250X4 one of recommended products.

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Rockford Fosgate Power T400-4 400-Watt Multi-Channel Amplifier

Rockford Fosgate Power T400-4 400-Watt Multi-Channel AmplifierAnother premium product from Rockford and this time it is less powerful but very capable amp which has crystal clear sound and lots of features. This 4 channel amplifier delivers 60W x 4 at 4-Ohms, 100W x 4 at 2-Ohms, 200W x 2 at 4-Ohms bridged (RMS) so it is modular and compatible.

It is class A/B amplifier with variable front/rear high-pass/low-pass filters with a range of 50-500 Hz which makes a very clear sound and reduces the background noises. It is more affordable than some other Rockford Fosgate products so it will appeal to a wider audience so if you want one of the best product on the market, you should check this amp for sure.

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BOSS Audio PH4.600 Phantom 2400-watts 4 Channel Amplifier

Compact, nice looking and affordable, Boss PH4. 600 is an interesting proposal for starter car audio kit. It has interesting features and high output power of 2400 W which is more than enough for any application. Of course, this amp can work on 2 and 4 ohms and it can be bridged if you need it to be. It is class A/B amplifier with thermal overload, speaker’s short protection, and remote subwoofer level control so you are covered.

The users reported that this amp work as it should and you can not find a better one in this price range. Some more demanding users said that in some cases, sound clarity was not perfect and it could be better but it can be fixed with better cables and speakers. However, we would recommend this for starters with a limited budget.

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Alpine PDXF6 / PDX-F6 / PDX-F6 4 Channel 150W Car Amplifier

Very elegant looking and nicely designed product is Alpine’s PDX F6 which comes with good features and upscale price, but this is something that you would expect from a manufacturer like Alpine. It is a class D amplifier with a max power output of 600 W at 4 ohms and variable high-pass and low-pass filters.

The package is very compact and easy to install and we would recommend it to users who don’t need much power or extremely powerful sound system but for those who want quality, brand name and perfect sound from smaller but better amp.

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  • 4.3 Customer Rating
  • ROCKFORD FOSGATE PBR300X4 PUNCH BRT 300-WATT ULTRA-COMPACT 4-CHANNEL AMPLIFIER
  • PRICE $$
  • Dimensions : 6.8 x 4.2 x 1.5 inches
  • Impedance 4-ohm
  • Class : BR
  • Watt : 300 W
  • 4.7 Customer Rating
  • ROCKFORD FOSGATE P600X4 PUNCH 4-CHANNEL AMPLIFIER
  • PRICE $$$
  • Dimensions : 13.3 x 7.8 x 2.4 inches
  • Impedance 2 Ohms
  • Class : A/B
  • Watt : 600 W
  • 4.4 Customer Rating
  • KENWOOD KAC-M3004 COMPACT 4 CHANNEL DIGITAL AMPLIFIER
  • PRICE $
  • Dimensions : 6.7 x 5.9 x 3.1 inches
  • Impedance 4 Ohms
  • Class : D
  • Watt : 600 W
  • 4.4 Customer Rating
  • JBL MA6004 4-CHANNEL FULL-RANGE MARINE AMPLIFIER
  • PRICE $$
  • Dimensions : 12 x 8 x 10 inches
  • Impedance 4 ohms
  • Class : A/B
  • Watt : 600 W
  • 4.2 Customer Rating
  • BOSS AUDIO PF1800 PHANTOM 1800-WATT FULL RANGE, CLASS A/B 2 TO 8 OHM STABLE 4 CHANNEL AMPLIFIER WITH REMOTE SUBWOOFER LEVEL CONTROL
  • PRICE $
  • Dimensions : 13 x 10 x 2 inches
  • Impedance 2 to 8 Ohm
  • Class : A/B
  • Watt : 1800 W

 

Rockford Fosgate PBR300X4 300-Watt 4-Channel Amplifier

Smaller, more affordable and very compact. This is, in short, the definition of Rockford Fosgate’s PBR300X4 amp.

This is the product intended for users which don’t need a lot of power but still want a quality product with the good specification in a small package designed for limited space. This is why this amp has just 300 W of output power and it is 4 ohms only. The amplifier also boasts a variable hi-level DC offset turn-on circuit for easy installation into any OEM system or as addition to the in-car stereo system which came from the factory. With small dimensions and decent power, it is perfect for roadsters, ATV vehicles or boats.

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Rockford Fosgate P600X4 Punch 4-Channel Amplifier

Another quality product from Rockford Fosgate and this time it is more powerful 600 W amplifier (4 x 150 W) at 2 ohms. However, this version can be bridged so it can act as two channel for regular speakers and one powerful channel for the subwoofer.

The package includes high-level input capable with Auto Turn-On circuit and RCA pass-thru outputs. This is more affordable device compared to the other Rockford Fosgate offerings, however, it still is not cheap so we would recommend you look for other options in this price range because this is not the best product of this manufacturer or their entry level product so the price could be justified. For this kind of money, you can get a more versatile and more powerful amplifier.

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Kenwood KAC-M3004 Compact 4 Channel Digital Amplifier

This car amp by Kenwood is a very interesting proposition for starters since it is affordable and has nice specifications. Also, it is very compact so it can be fitted almost anywhere. It works on 2 and 4 ohms and in once case it has a power output of 75 W x 4 and in other 50 W x 4 so it isn’t very powerful unit but since it is designed to be installed in small vehicles and deliver power trough small diameter speakers, it is enough.

The amp also uses a conformal coated main PCB (printed circuit boards) which offer extra layers of protection to help prevent moisture or damp air from damaging the product so it will work perfectly for a long time. We would recommend this product since it is a quality unit with solid specifications and compact dimensions at a lower price.

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JBL MA6004 4-Channel Full-Range Marine Amplifier

JBL MA6004 4-Channel Full-Range Marine AmplifierJBL is also a famous name on the audio market however it is more specialized for car speakers. But this isn’t a unit you would normally found in a car. It is an amp specially designed for marine use which means that it is for installation on boats and similar floating objects.

With the popularity of water sports and availability of various powerboats, there is a market niche of in-boat audio systems which needs waterproof speakers and amplifiers. This is one of them, it is waterproof and has a max power of 600 W with stainless steel hardware so it is not affected by sea water. Of course, it can also be used in the car but packaging and isolation clearly determine its main use. Interesting offering and there is a market for this kind of amps.

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BOSS AUDIO PF1800 Phantom 1800-Watt 4 Channel Amplifier

Very affordable and very versatile product from Boss Audio in form of PF1800 Phantom amp. It has a pretty decent power output of 1800 W and working range from 2 to 8 ohms which are good to know and usable.

It also features full range, MOSFET power supply, high and low level inputs, variable high pass crossover, variable low-pass crossover, variable bass boost and remote subwoofer control, Impressive specifications and options in sub 100$ package is obviously intended for budget users that need a lot of stuff and power but don’t have a lot of money.

Users reported that this package delivers on its promise and is a good proposition for any in-car enthusiast on the budget.

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Advantages Of 4 Channel Amplifiers

Best 4 Channel AmpThe 4 channel amp is a reasonable proposition for moderate car audio fan which gives him enough options. You can use 4 channel amp only and connect it with four speakers or you can bridge it to have a subwoofer or you can have another amp over it for full power and multi-device connection. It is up to you.

On the other hand, 4 channel amps are compact and cheaper than 5 channel amplifiers and more in reach of a regular in-car audio fan. You can find really small ones which can fit anywhere and you can find even 4 channel amps that are built for special use – like in boats and floating objects.

Best 4 Channel Amp Comparison Chart

PRODUCTPRICEDIMENSIONOHMCLASSWATT
ROCKFORD FOSGATE POWER SERIES T1000-4AD 4 CHANNEL AMPLIFIER$$$$$14.7 x 8.2 x 2.2 inches250x4 @ 4 ohms 500x2 @ 2 ohmsD1000
LANZAR OPTI250X4 OPTIDRIVE 2000 WATT 4 CHANNEL COMPETITION CLASS MOSFET AMPLIFIER$$$$26 x 15.5 x 6.8 inches4 OhmsD2000
ROCKFORD FOSGATE POWER T400-4 400-WATT MULTI-CHANNEL AMPLIFIER$$$13.7 x 8.1 x 2.1 inches60W x 4 @ 4-Ohms, 100W x 4 @ 2-Ohms, 200W x 2 @ 4-Ohms bridgedA/B400
BOSS AUDIO PH4.600 PHANTOM 2400-WATTS FULL RANGE CLASS A/B 4 CHANNEL 2-8 OHM STABLE AMPLIFIER WITH REMOTE SUBWOOFER LEVEL CONTROL$17 x 2.2 x 9.5 inches2-8 OhmA/B2400
ALPINE PDXF6 / PDX-F6 / PDX-F6 4 CHANNEL 150W CAR AMPLIFIER$$$$13 x 9.1 x 4.3 inches4 ohmD600
ROCKFORD FOSGATE PBR300X4 PUNCH BRT 300-WATT ULTRA-COMPACT 4-CHANNEL AMPLIFIER$$6.8 x 4.2 x 1.5 inches4 OhmsBR300
ROCKFORD FOSGATE P600X4 PUNCH 4-CHANNEL AMPLIFIER$$$13.3 x 7.8 x 2.4 inches2 OhmsA/B600
KENWOOD KAC-M3004 COMPACT 4 CHANNEL DIGITAL AMPLIFIER$6.7 x 5.9 x 3.1 inches4 OhmsD600
JBL MA6004 4-CHANNEL FULL-RANGE MARINE AMPLIFIER$$12 x 8 x 10 inches4 OhmsA/B600
BOSS AUDIO PF1800 PHANTOM 1800-WATT FULL RANGE, CLASS A/B 2 TO 8 OHM STABLE 4 CHANNEL AMPLIFIER WITH REMOTE SUBWOOFER LEVEL CONTROL$13 x 10 x 2 inches2 to 8 OhmA/B1800

Conclusion:

For any purpose, any car or any power lever, there is a 4 channel amp. Most of those are affordable offerings with quality components and decent power which could satisfy even the most demanding users. We selected a number of product reviews as well as buying guides and useful explanation to give you as much information as possible from the world of car amplifiers. Follow our articles and find the best 4 channel amp for you and your car.

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