What is a 4 Channel Car Amplifier?
4 channel car amplifiers are necessary in any car with a stereo system. You can lay down as much cash as you want for a high-end stereo system for your car, but if you do not have the proper car amplifier, it will most definitely be a waste of money for you, no matter how much you paid for that subwoofer, it will not produce the palpable boom you crave, unless you have a car amplifier. The 4 channel amplifier’s we are discussing here today, all have four channels available so you can connect to your cars audio components via four output channels, wiring the 2 speakers in the front and the two in the back.
How to Choose a Car Amplifier?
Choosing the perfect 4 channel car amplifier for your needs will vary with each individual. This is based on their cars stereo system and installation space available in their vehicle. For instance, even though 2 people had the same vehicle model, one may be using the original factory stereo that came with the car, while another would be using an aftermarket stereo. That being said, there are basically only two main considerations when choosing an amplifier for your car: Power and size.
Power: Power depends on the car system you have installed in your car. Check your car stereo’s speaker RMS power rating, as this rating is what you will use to choose your 4 channel amplifier. You will be looking for a 4 channel amplifier that can put out around 75 to 150 percent of that RMS number. If you have a subwoofer, don’t forget that, and check its RMS rating as well.
Size: As you will be adding this to your car, you need to think of placement and size. Placement of a 4 channel amplifier is usually under a seat or in the trunk. It’s very important that you decide where you want to install your amplifier before you purchase one, as the fit must be absolutely perfect. If the fit is not perfect, then you will risk ruining not only your amplifier, but your cars interior as well.
Why We Have Recommended These three 4 Channel Amp for you?
As we have previously discussed, searching for the prefect 4 channel amplifier for your needs is very much an individual choice. There is no one way anyone can make this decision for you due to the fact that the amplifier must be compatible with the installation space available, and the current car stereo system that you have. We understand this, so have chosen these top three models, as amplifiers which seem to be the most versatile, and cover the most ground in being able to suit most everyone’s car amplifier needs.
The 4 channel car amplifier that tops our list for the best 4 channel amp, is the Rockford Fosgate R400-4D car amplifier. At 12 x 9.3 x 4 inches, this amplifier has been designed to pack a whole lot of power into a small space, which makes it perfect for those who need an amp of that size to fit in their installation space of their vehicle. As for power, the Rockford Fosgate has enough punch to pack 75 watts RMS to each full range speaker or component.
Our second choice is the Planet Audio AC1200.4 ANARCHY Car Amplifier. At 11 x 10 x 2.5 inches, this amplifier is capable of suiting the needs of most drivers, as always make sure you measure your installation area before you make any determination. There is no doubt that this 2 Ohm stereo stable amplifier provides power with 1200 watts of maximum power available, with an automatic shut off feature which prevents it from overheating.
Finally, rounding out our top three is the CT Sounds AT-125.4 Class D 4 Channel Car Amplifier. Power wise, this model suits most needs, providing 1 Ohm at 12.8 volts is 500 RMS and 1000 watts max; 2 Ohms at 12.8 volts are 250 RMS and 500 watts max; 4 Ohms at 12.8 volts are 125 RMS and 250 watts max. Taking size into consideration, this model measures in at 11 x 14.2 x 1.1 inches, which should fit most vehicles. All in all, this basic car amplifier will give you power at a good price.
Top 4 Channel Amp List
|CT Sounds||D||2000 Watt|
The 7 Best 4 Channel Car Amplifier Reviews in 2018
The Prime R400-4D car amplifier gives you high performance by way of its full range Class D circuit topology class, which means that it is a high efficiency amp which is designed to cut down on current consumption from the charging system. The cool-running Rockford Fosgate model is one of the most powerful Prime Class D amplifiers on the market, putting out 75 watts RMS to each full range speaker or components. High and low pass filters and Punch bass boost allow you to tune your speakers to get the best performance.
This unit is powerful enough to adequately support your entire car system, as its 4 channel design allows you to fun midrange woofers and tweeters in the front of your car, and midrange woofers and tweeters in the rear. This unit is CEA-2006 compliant, total power of 400 watts RMS, bridgeable, a cast aluminum heatsink and top mounted controls. It has an on-board Punch equalizer, 2/4 channel input switch, 4 guage power/ground connectors, RCA pass-through outputs and a 12 decibel/octave Butterworth crossover.
Summary- The Rockford Fosgate R400-4D 4 channel car amplifier is one of the most powerful amplifiers on the market today. It has a 12 decibel/octave Butterworth crossover, RCA pass through outputs, a tri stage protection cover, over current and short circuits, as well as an on board Punch equalizer. there is also a 2/4 channel input switch, 4 gauge power/ground connector, cast aluminum heatsink and top mounted controls.
Pump up that volume with the Planet Audio Anarchy AC1200.4 4 Channel Class A/B Full Range Amplifier, which reproduces your low and high frequency music beautifully and in defined tones, while cutting down on distortion. This model has the convenience of being equipped with a remote subwoofer level control, has no problem accepting both high and low impedance input, and a soft delayed power on. This 2 Ohm, stereo stable amp offers your 1200 watts of maximum power, along with a MOSFET PWM power supply which is responsible for the high efficiency output, black anodized heatsink, bridgeable trimode operation, input sensitivity selector, variable bass boost, and low and high input levels.
It has a soft turn on/off circuit, thermal and speaker short protection which provides an automatic shut off in case your amplifier gets a little too warm. The variable low pass filter means that you have total control over the frequencies which enter into the subwoofer, and the fixed high pass filter gives you control when it comes to filtering the frequencies that go through the full range speakers. The design of the Anarchy line of amplifiers is built around giving the user the ability to control the sound they experience.
Summary-TThe Planet Audio AC1200.4 ANARCHY 4 channel amplifier is a powerful amp for your cars stereo system. It comes with a bridgeable trimode, input sensitivity selector, variable bass boost, and a continuously variable high pass and low pass crossovers. It has low and high level inputs power and protection LED indicator lights, chrome plated connections and a remote subwoofer level control.
If you are looking for a solidly built, powerful, basic car amplifier at a good price, we offer you CT Sounds entry, with its AT-125.4D 4 channel car amplifier for your consideration. This is a 4 channel, Class D design amplifier which is designed to handle both high and mid range frequencies, and look good doing it with its Plexiglas bottom, and flashy LED logo on the top. In order to ensure that the amplifier remains stable at high loads, it is designed with 2 built-in fuses. As for power, this unit offers the following: 1 Ohm at 12.8 volts is 500 RMS and 1000 watts max; 2 Ohms at 12.8 volts are 250 RMS and 500 watts max; 4 Ohms at 12.8 volts are 125 RMS and 250 watts max.
It comes with a MOSFET Pulse Width Modulated power supply, bridgeable outputs, soft turn on circuitry, 1 Ohm stable mono operation, thermal, DC offset, overload and speaker short protection built-in. This model has low resistance inputs to the amp due to nickel plated RCAs, with LED power and protection indicator lights. The fact that this is a Class D amplifier, the audio amplification is handled by electronic amplifying switches inside, for a powerful and effective gain.
Summary- The CT Sounds AT-125.4 Class D 4 Channel Car Amplifier has a MOSFET PWM power supply, bridgeable outputs and a soft turn on circuitry. In order to prevent overheating there is a thermal, DC offset, overload and speaker short protection built in. The RCAs are nickel plated for low resistance inputs and handy LED power and protection indicator lights. This is a very suitable choice for anyone looking for a good, basic amplifier that provides power at an affordable price.
This 4 channel amp by Skar is just made for people who want a lot of push behind their speakers. The RP-150.4AB is a 4 channel Class A/B full range car amplifier which has no problem supplying plenty of power to all of your car stereos components. Indeed, you would have no issue with this amplifier supplying power to 4 sets of speakers who have an RMS rating of 250 watts each. If you love to pump up your sounds, and are accidentally guilty of burning out a few speakers, you’ll be happy to know that the Skar has a 4 way protection circuitry design: Speaker, thermal, voltage, and DC to help prevent anything like that from happening in the future.
This 4 channel amplifier comes complete with a high speed MOSFET power supply, adjustable user crossover controls, a soft turn on circuit, tri-mode capable and bridgeable.. These crossover controls include a LPF and an HPF, which can also be bridged. Since it has a class AB circuitry design, the amplifier can reproduce a tight, clear and clean sound, much better than many of its competitors of the same class.
Summary- The Skar Audio RP-150.4AB Multichannel Amplifier is a pure Class A/B 4 channel amp with 4 way protection circuitry: Thermal, voltage, speaker, and DC. RMS at 4 Ohms is 150 watts, RMS at 2 Ohms is 150 watts, and RMS at 4 Ohms bridged is 500 watts. MOSFET power supply, soft turn on circuit, and tri-mode capable and bridgeable. There are 4 gauge power and ground terminals, and a 120 amp fuse rating which add to its endurance and overall solid performance.
The Alpine MRV-F300 Class D digital amplifier is built to give you continuous power to your cars stereo system, and do it at 80 percent efficiency, far better than standard Class A or B amplifiers. You’ll also find that this model is small in size, so you’ll have no problem fitting it in your trunk or under your seats. This model is absolutely perfect for those who want power, but have a smaller installation area. The MRV-F300 easily hook up to most head units, so you will not need to purchase external converters.
Because of this factor, it’s a good choice for those who are using it to upgrade their factory system or add some punch and power to their aftermarket car stereo system. Installation is easy with flush mount controls, low pass crossover frequency is 50 to 400 Hz, high-pass crossover frequency is 50 to 400 Hz, bass boost is 12 decibels, and the amplifier is CEA-2006 compliant. Front and rear are bridgeable, speaker level input harness is included, auto turn on, and 2 pair of stereo RCA jacks for line inputs. An added plus, is that each of these amplifiers have their own ‘birth sheet’, which means that you know for certain that the model you purchased has passed the tests and their actual output is documented.
Summary- The Alpine MRV-F300 Class D digital amplifier is a Class D, low-pass crossover frequency of 50 to 400 Hz, a high-pass crossover frequency of 50 to 400 Hz, a bass boost of 12 decibels, and 2 pair of stereo RCA jacks. Speaker level input is a Molex plug input for the 8 pin harness, auto turn on, speaker level input harness included, and the amp is bridgeable. This is good amplifier for anyone who is looking to upgrade their factory system or add a push to their aftermarket stereo system.
If you are looking for a reliable and durable amplifier for your more active vehicles such as marine and off road, then you must definitely take a closer look at this Kenwood Amplifier. Kenwood’s KAC-M3004 compact 4-channel marine amplifier is tough and powerful, giving your 50 watts RMS per channel. The model has been designed to be compact enough to fit in most small spaces, such as your trunk or under the seats. It has also been designed to fit in recreational vehicles, such as boats, ATV’s or your motorcycle, as well as being water resistant and durable enough to handle off road conditions usually experienced by recreational vehicles.
To add further protection against the elements, the speaker output terminals have plastic covered plugs.
The Kenwood is CEA-2006 compliant, is built with Class D amplifier technology with a conformal coated circuit board to handle water and power sports activities. The power supply is a Pulse Width Modulated MOSFET power supply, LED indicator lights with green signaling power and red protection, and variable HP/LP filters are 24 decibels/octave. You can choose 4 or 2 channel operation, speaker level inputs, 3 way circuitry protection: Thermal, overload and speaker short protection.
Summary- RThe Kenwood KAC-M3004 isi a 4 channel car amplifier with Pulse Width Modulated MOSFET power supply, 50 watts RMS x 4 at 4 Ohms, 150 watts x 2 bridged at 4 Ohms, CEA-2006 compliant, and built with Class D amplifier technology. It has variable high and low pass filters at 12 decibel/octave, preamp and speaker lever inputs and conformal coated circuit board in order to withstand marine activities. 3 way circuitry protection: Thermal, overload, and speaker short protection. This is the model to look at if you are in the market for an amp for your motorcycle or recreational vehicle.
The Punch P600X4 4 channel amplifier from Rockford Fosgate, is a Class AB design amplifier, and has enough power for 75 watts RMS for both front and rear speakers, so will have no issue in powering your entire car stereo system including components. This model is built with over current protection, short circuit protection a cast aluminum heatsink, and stealth top mounted control panel. This thermal management system works by taking forced air to distribute heat evenly throughout the amplifier and out through the heatsink, so there is no risk that it hits your amplifiers working parts.
You can also bridge both channels with the P600X4, which means by bridging you are creating a powerful 2 channel amp, or you can decide to power your speakers on the front with subwoofers, or the rear speakers in a 3 channel mode. This model also has variable high and low pass crossover and a built-in equalizer with an 18 decibel boost as well as a treble boost, so you can precisely tun your bass frequencies, a high level input capable with Auto Turn-On circuit, RCA pass-thru outputs, 12dB/octave Butterworth crossover. Their C.L.E.A.N. technology is designed to eliminate noise, and makes certain that the music you hear will sound crisp, clear and powerful, and indicator lights will let you know if sound distortion is occurring, so you do not damage your system.
Summary- Rockford Fosgate P600X4 Car Amplifier has a MOSFET power and output, an auto turn on circuit, RCA pass through outputs, C.L.E.A.N technology, Butterworth 12 decibel/octave, Punch equalizer with an 18 decibel boost, muted turn on, stealth top mounted control panel. A cast aluminum heatsink, short circuit protection, over current protection. The Rockford Fosgate P600X4 is a capable amplifier, tough and durable.
How to install an Amplifier in a Car?
We have included a guide for you to become familiar with the basics of installing a car amplifier. This is only a guide to give you an idea as to the installation process, as each and every car amplifier installation is different, and your product manual will supply you with the exact steps needed to complete a successful install. We recommend that you request the services of a professional mechanic when installing your cars amplifier if you do not feel secure in doing it yourself.
Note: First and foremost, do no electrical work on your car until you disconnect your cars battery. You must do this before you proceed.
Step 1: Gather and Access: In the beginning, it is important to set aside time where you will not be interrupted, and gather all tools required. Most amplifier kits will come with everything you need. However, just in case, always make sure that you have enough wiring to complete the job.
Wiring usually includes a main power wire, ground wire, RCA cables and speaker wires. If your amplifier did not come with wiring, simply purchase an amplifier wiring kit. Also, at this time, double check that the area you wish to install your amplifier is the best choice, as it should be a perfect fit. If you have any questions consult your manual or a professional mechanic.
Step 2: Placement of Your 4-Channel Amplifier: Take your 4-channel amplifier and position it in your trunk, or any other dry, ventilated area such as under a seat or against the passenger side firewall. Mount your amplifier according the the instructions in your amplifiers owners manual. If you are drilling, please be careful to drill where you will not damage any of your cars components.
Next, you want to ground your amplifier, so you will connect the ground wire to the 4 channel amplifier according to your products instruction manual. Check with your manuals amplifier for specifics, but usually you will ground the wire to a solid, metal bolt, nut or screw, one that is pure metal, with no plastic, rust or paint. Taking your screwdriver, unscrew the nut and position the ground wire at the base and then tighten the nub over the ground wire.
Step 3: Wiring: At this point, it is time to feed and connect your wires. Follow your manuals instructions and connect your wires and cables. The Basic wiring routine includes: Running your main power wire from the battery to the amplifier, running turn-on wire and signal cables, and sending the signal from your amp to your speakers.
When running your wires, you always want your wiring a little loose, instead of super tight. After you have connected all the wires and cables, and made sure there is a gentle slack, secure them all with cable ties. Remember that whenever you do wiring, please keep it away from sharp edges, moving car parts, hot areas of your car and take great pains to avoid bending or kinking the wiring.
The Final Thought (Conclusion)
There you have it, a nice run down on just about everything you need to know to get you started on your road to purchasing the prefect 4 channel car amplifier for your needs. As you can see, without the perfect car amplifier, your vehicles stereo system will not offer you peak performance, as speakers, including subwoofers, require an amp for that extra bit of power push. Each and every one of our offerings represent the absolute best car amplifiers available on the market today, and we sincerely hope that this review has given you a good start in how to find the best 4 channel amplifier for your car, boat, or recreational vehicle.