Best 4000-Watt Amps (2024)

4000-watt amps are a powerful type of amplifier that can significantly enhance your audio experience. These amps are designed to deliver a high level of power output, making them ideal for use in large venues, outdoor events, and other situations where you need to produce a lot of sound.

When it comes to purchasing a 4000-watt amp, there are a few critical things you should consider. First, you need to think about the type of audio equipment you’ll be using with the amplifier. Some amps are designed for use with specific types of speakers or audio systems, so it’s essential to choose an amp that is compatible with your equipment.

Another critical factor to consider is the quality of the amp. A high-quality 4000-watt amp will be built to last, with durable components that can withstand the demands of heavy use.

You should also look for an amp that has a range of features, such as multiple inputs and outputs, built-in EQ, and other tools that can help you fine-tune your sound.

We will help you identify the ones that deliver the best performance and value for your money. In the following sections, we’ll take a closer look at some of the top models on the market and provide you with the information you need to make an informed decision about which 4000 Watt Amp is right for you.

Best 4000 Watt Amps

Looking for a powerful amplifier to take your sound system to the next level? We’ve got you covered. After hours of research and testing, we’ve compiled a list of the best 4000-watt amps on the market.

These amps boast impressive power and clarity, making them perfect for concerts, parties, or just cranking up the volume in your car. Check out our top picks below and get ready to experience sound like never before.

Planet Audio PL4000.1D Class D Car Amplifier

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If you’re looking for a powerful and compact amplifier that can deliver great sound quality, the Planet Audio PL4000.1D Class D Car Amplifier is worth considering.

Pros

• The 4000 Watts Max Power with a MOSFET power supply provides a significant boost to your music.
• The Variable Low Pass Crossover, Bass Boost, Subsonic Filter, and Switchable Phase Control allow you to customize the sound to your liking.
• The Remote Subwoofer Control makes it easy to tweak the levels and get the perfect sound.

Cons

• The remote control is not very reliable and may not work as well as you’d like.
• The amplifier can get hot quickly, especially if you’re playing music at high volumes for extended periods.
• The plug hole for the bass knob is small and may not be compatible with all types of cables.

In our experience, the Planet Audio PL4000.1D Class D Car Amplifier is a great choice for anyone who wants to upgrade their car audio system without sacrificing space or power.

The amplifier is compact and lightweight, making it easy to install in almost any vehicle. The MOSFET power supply ensures that your music sounds clear and powerful, while the Variable Low Pass Crossover, Bass Boost, Subsonic Filter, and Switchable Phase Control allow you to fine-tune the sound to your liking.

One of the standout features of this amplifier is the Remote Subwoofer Control, which allows you to adjust the levels of your subwoofers from the comfort of your driver’s seat. This feature is especially useful if you’re frequently changing the type of music you’re listening to and need to make quick adjustments on the fly.

However, the remote control is not very reliable and may not work as well as you’d like. Additionally, the amplifier can get hot quickly, especially if you’re playing music at high volumes for extended periods. Finally, the plug hole for the bass knob is small and may not be compatible with all types of cables.

Overall, we believe that the Planet Audio PL4000.1D Class D Car Amplifier is a solid choice for anyone who wants to upgrade their car audio system without breaking the bank. The amplifier is powerful, compact, and easy to install, and it comes with a 6-year Platinum Online Dealer Warranty if you purchase it through Amazon.com.

Rockville dB14 4000w Peak/1000w RMS Mono 2 Ohm Amplifier Car Audio Amp

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If you’re looking for a powerful and affordable car amplifier, the Rockville dB14 is a great option to consider.

Pros

• The Rockville dB14 is a budget-friendly option that offers excellent power output for its price range.
• The amplifier is dyno-certified, ensuring that it delivers the power it promises.
• The fully adjustable crossover and bass equalizer allow for customization of your car’s sound system.

Cons

• The amplifier is quite large and may not fit in all car audio setups.
• The included bass remote is not very user-friendly and may take some time to figure out.
• Some users have reported issues with the amplifier overheating, so it may not be the best option for extended use.

We were impressed with the Rockville dB14’s power output and the ability to customize our car’s sound system. However, the amplifier’s size and the included bass remote may not be ideal for all users.

Additionally, some users have reported issues with overheating, so it may not be the best option for extended use. Overall, we recommend the Rockville dB14 for those who want a powerful and affordable car amplifier.

Planet Audio AC4000.1D Anarchy Series Car Audio Amplifier

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If you’re looking for a powerful amplifier that can handle your in-vehicle audio needs, the Planet Audio AC4000.1D Anarchy Series Car Audio Amplifier is a great choice.

Pros

• With a maximum power output of 4000 watts at 1 ohm, this amplifier is capable of delivering clear and loud sound that can fill your vehicle.
• The Class D power supply of this amplifier makes it highly efficient, reducing power loss and heat generation.
• The amplifier is 1 ohm stable, meaning it can power subwoofers that require heavy power loads without overheating.

Cons

• At 11.2 lbs, this amplifier is on the heavier side and may not be suitable for all vehicles.
• The amplifier can get hot during extended use, so it’s important to ensure proper ventilation.
• The amplifier may require professional installation to ensure proper and safe functionality.

The Planet Audio AC4000.1D Anarchy Series Car Audio Amplifier is a great choice for those looking for a powerful amplifier that can handle their in-vehicle audio needs.

With a maximum power output of 4000 watts at 1 ohm, this amplifier is capable of delivering clear and loud sound that can fill your vehicle.

The Class D power supply of this amplifier makes it highly efficient, reducing power loss and heat generation. Additionally, the amplifier is 1 ohm stable, meaning it can power subwoofers that require heavy power loads without overheating.

However, it’s important to note that at 11.2 lbs, this amplifier is on the heavier side and may not be suitable for all vehicles. Additionally, the amplifier can get hot during extended use, so it’s important to ensure proper ventilation. Finally, the amplifier may require professional installation to ensure proper and safe functionality.

Overall, if you’re looking for a powerful and efficient amplifier that can handle your in-vehicle audio needs, the Planet Audio AC4000.1D Anarchy Series Car Audio Amplifier is worth considering.

Pyle 4 Channel Car Stereo Amplifier

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If you’re looking for a powerful car amplifier, the Pyle 4-Channel Car Stereo Amplifier is a great option. With 4000 watts of power, it’s perfect for upgrading your car’s sound system. We highly recommend this product to anyone who wants to enjoy high-quality audio while on the road.

Pros

• The MOSFET pulse width modulation power supply produces a clean, distortion-free signal to your speakers, providing you with crisp and clear audio.
• The amplifier features a thermal, overload, and short circuit protection system to keep your car and stereo amp safe.
• The small size of the amplifier makes installation a breeze, and it’s designed to be sturdy and long-lasting.

Cons

• The bass boost control can be a bit overwhelming if not adjusted properly.
• The LED lights can be a bit too bright, especially at night.
• The amplifier can overheat if used for extended periods of time.

The Pyle 4-Channel Car Stereo Amplifier is a great addition to any car audio system. The MOSFET pulse width modulation power supply produces a clean and distortion-free signal to your speakers, which provides you with crisp and clear audio.

The thermal, overload, and short circuit protection system ensures that your car and stereo amp are safe from any damage.

The small size of the amplifier makes installation a breeze, and it’s designed to be sturdy and long-lasting. However, the bass boost control can be a bit overwhelming if not adjusted properly, and the LED lights can be a bit too bright, especially at night.

Additionally, the amplifier can overheat if used for extended periods of time.

Overall, we highly recommend the Pyle 4 Channel Car Stereo Amplifier for anyone who wants to enjoy high-quality audio while on the road. It’s a powerful and reliable amplifier that will provide you with the best sound possible.

DS18 SXE-4000.4D/BK Car Amplifier

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If you’re looking for a powerful and compact amp for speakers in your car audio system, the DS18 SXE-4000.4D/BK Car Amplifier is a great option. With its high performance and variable crossover, you can tailor the audio to your personal listening preferences.

Pros

• The SXE series of amps guarantees your sound system’s speakers perform at their peaks on every use.
• The SXE series of amplifiers gives users the ability to tailor the audio reproduced by their vehicle to their personal listening preferences through the use of its fully variable crossover, adjustable gain input sensitivity, and multi-channel amplifier design.
• The SXE-4000.4D has a power output of 750W x 2 CH bridged at 4 ohms, 430W x 4 CH at 2 ohms, and 275W x 4 CH at 4 ohms, making it the perfect size for any vehicle’s custom build.

Cons

• It’s not as powerful as they state, but it does the job decently for the price.
• The amp may create a fire hazard in your vehicle when it nearly blows up and burns.
• It doesn’t come with its colors of input and output.

We tested this amp and found that it was able to supercharge our custom build with its perfect power settings. The SXE-4000.4D/BK Car Amplifier is a great choice for anyone looking to upgrade their car’s audio system.

The DS18 SXE-4000.4D/BK Car Amplifier is a great option for those who want to take control of their listening experience. With its fully variable crossover, adjustable gain input sensitivity, and multi-channel amplifier design, you can tailor the audio to your personal preferences.

The amp’s power output is impressive, making it the perfect size for any vehicle’s custom build. However, some users have reported issues with the amp creating a fire hazard in their vehicle and it doesn’t come with its colors of input and output.

Overall, we recommend this amp for those looking for a high-performance and compact option for their car audio system.

Planet Audio BBD4000 Class D Car Amplifier – 4000 Watts

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If you’re looking for a powerful car amplifier that can handle heavy subwoofers, the Planet Audio BBD4000 is worth considering. We’ve been using this amplifier for a while now, and it has not disappointed us.

Pros

• The BBD4000 is a Class D amplifier, which means it is highly efficient and produces less heat than other types of amplifiers. This makes it much easier to install and use in your car.
• The amplifier is 1 ohm stable, which means it can continuously power a heavy load without overheating or encountering any difficulties. This is perfect for powering up subwoofers that demand heavier power load requirements to perform at their best.
• The BBD4000 comes with a variable subsonic filter that filters out frequencies below the subwoofer’s specified low-frequency limits. This helps prevent the subwoofer from bottoming out and allows the driver to reach maximum safe excursion.

Cons

• The BBD4000 is not bridgeable, which means you cannot use it to power multiple subwoofers at once.
• The amplifier is quite large, with dimensions of 17.8 x 6.9 x 2.7 inches, and it weighs 11 pounds. This may make it difficult to install in some cars.
• The amplifier does not come with a remote control, which may be a deal-breaker for some users.

Overall, we highly recommend the Planet Audio BBD4000 Class D Car Amplifier – 4000 Watts. It’s a powerful and efficient amplifier that can handle heavy subwoofers without any difficulties. The variable subsonic filter and 1-ohm stability make it a great choice for serious car audio enthusiasts.

In our experience, the BBD4000 produces clear and powerful bass, and the variable low-pass crossover and bass boost allow you to customize the sound to your liking. The MOSFET power supply ensures precise control over the output voltage and current, while the compact circuitry and smaller heat sink make it easy to install and use.

If you’re looking for a high-quality car amplifier that can handle heavy subwoofers, the Planet Audio BBD4000 is definitely worth considering.

Massive Audio E4 – Car Audio 4,000 Watt Nano Edge Series, Monoblock Car Amplifier, Bass Boost, 1 Ohm Stable E4 – 4,000 Watt

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If you’re looking for a powerful car audio amplifier, the Massive Audio E4 is worth considering. We’ve been using it for a while now and it’s a great investment for anyone who wants to upgrade their car’s sound system.

Pros

• The Massive Audio E4 is a high-performance car audio amplifier that provides a real punch for your car stereos and subwoofers. With 2000 Watts x 1 RMS @ 1 Ohm / 4000 Watts MAX, this amplifier produces a powerful, clean, full sound that will make your music come alive.
• The built-in OEM line converters with RCA inputs that can take a high-level speaker signal at up to 10 Volts directly in, making it easy to connect to your car’s sound system. DC 5V – 15V Operating Voltage ensures that it works great and provides high power with low efficiency.
• The Massive Audio E4 is built to last with extra features like Built-in Noise Reduction Circuitry, Auto Sensing Turn On Function, 12V Remote Output for External Devices (Hi-Level Inputs), and Mil-Spec Double Sided PCB with SMD Parts. This ensures that you get your money’s worth and that the amplifier will last longer.

Cons

• One of the downsides of the Massive Audio E4 is that it can be a bit pricey for some people. However, we believe that the quality of this amplifier is worth the investment.
• Another downside is that it may not be suitable for everyone, especially those who have smaller cars. The amplifier is quite large and may take up a lot of space in your car.
• Lastly, the Massive Audio E4 can be a bit difficult to install if you’re not familiar with car audio systems. It’s important to have some knowledge about car audio systems before attempting to install this amplifier.

Overall, we highly recommend the Massive Audio E4 to anyone who wants to upgrade their car’s sound system. It’s a great investment that will provide you with a powerful, clean, full sound that will make your music come alive.

Buying Guide

When it comes to choosing a 4000-watt amp, there are a few important factors to consider to ensure that you get the best product for your needs. Here are some key features to look for:

Power Output

The power output of an amp is measured in watts, and it’s important to choose an amp that can handle the power needs of your speakers. A 4000-watt amp is a powerful option that can provide plenty of volume and clarity, but it’s important to make sure that it’s compatible with your speakers. Look for an amp with a power output that matches the power handling capabilities of your speakers.

Number of Channels

The number of channels on an amp determines how many speakers it can power. If you have multiple speakers that you want to connect to your amp, look for an amp with multiple channels. A 4000-watt amp typically has at least two channels, but some models may have four or more.

Impedance

Impedance is a measure of how much resistance a speaker presents to an amp. It’s important to choose an amp that is compatible with the impedance of your speakers. Look for an amp with a matching impedance rating to ensure that you get the best sound quality and performance.

Cooling System

A 4000-watt amp can generate a lot of heat, so it’s important to choose an amp with a reliable cooling system. Look for an amp with a built-in fan or other cooling mechanism to help dissipate heat and prevent overheating.

Warranty

Finally, it’s important to choose an amp with a good warranty. Look for an amp with a warranty that covers defects and malfunctions, and make sure that you understand the terms and conditions of the warranty before making your purchase.

By considering these factors, you can choose a 4000-watt amp that will provide powerful, high-quality sound for your audio system.

Frequently Asked Questions

What are the benefits of a Class D amplifier when it comes to 4000-watt systems?

Class D amplifiers are known for their high efficiency, which means they can produce more power with less heat dissipation. This makes them ideal for high wattage systems like 4000-watt amps. They also tend to be smaller and lighter than other types of amplifiers, making them easier to install in your vehicle.

Can you explain the difference between 2-channel and 4-channel amplifiers for high-wattage systems?

2-channel amplifiers are designed to power two speakers, while 4-channel amplifiers can power up to four speakers. When it comes to high-wattage systems, a 4-channel amplifier may be a better choice if you want to power multiple speakers. However, a 2-channel amplifier can still provide plenty of power for a single pair of speakers.

What should I look for in a 4000-watt amp to ensure it’s stable at 1 ohm?

When looking for a 4000-watt amp that can handle 1-ohm loads, you should look for features like a heavy-duty power supply, high-quality output transistors, and a robust cooling system. You should also make sure the amp is rated for 1-ohm operation and has built-in protection circuits to prevent damage from overheating or short circuits.

How do the specs of the Hifonics Brutus 4000 Watt Amp compare to other high-wattage amps?

The Hifonics Brutus 4000-watt amp is a popular choice for high-wattage systems, thanks to its high power output and solid construction. Compared to other amps in its class, it offers excellent value for the price and is known for its reliability and performance.

What are the key features to consider when choosing a 4000-watt car amplifier?

When choosing a 4000-watt car amplifier, you should consider factors like power output, impedance handling, build quality, and features like built-in crossovers and EQ. You should also make sure the amp is compatible with your vehicle’s electrical system and has the necessary inputs and outputs to connect to your speakers and other components.

How does the power draw of high-wattage amplifiers like 4000-watt models affect my vehicle’s electrical system?

High-wattage amplifiers like 4000-watt models can place a significant strain on your vehicle’s electrical system, especially if you’re running other high-powered components like subwoofers and aftermarket lighting. To avoid problems like voltage drops and blown fuses, you may need to upgrade your alternator, battery, and wiring to handle the increased power demand.

What Kind of Amp to Buy?

The answer to this question is very simple. You should buy an amp that matches your needs and plans. So, the real question is – what do you want to do? Do you want to add a subwoofer, replace the front and rear speakers, or all of the above?

Depending on your answer, you’ll be looking for a different kind of amp.

So, for example, if you only want to add a subwoofer or two and you are perfectly happy with your car speakers, the most convenient solution is a mono amp.

Mono amp (or monoblock) is an amplifier with one speaker output and it’s only used for the subwoofers. 

In case you want to replace only two front speakers or all 4 speakers, you would need a 2-channel or 4-channel amp.

If you want to replace all the speakers and add a sub, you could either buy one powerful 5-channel amp or buy two amps – one mono amp for the subwoofer and the other multi-channel amp for the speakers.

You will have to choose the mono amp carefully and look for the amp with RCA preamp outputs. These RCA preamp outputs are important for pairing two amps together.  

When buying a mono amp, you should also consider the type of amplification. Two types are the most common – Class-AB and Class-D.

Class-AB mono amps are usually cheaper but they are less efficient and have higher operating temperatures. Class-D amps enable great bass reproduction and they are a better choice when it comes to mono amps.

When it comes to multichannel amps (used for powering full-range speakers and tweeters), Class-AB amplification is a better option.

Digital amplification is still more efficient (in terms of power output) and offers cooler performance but it distorts the mids and highs much more than the analog amplification.

Class-AB amps offer cleaner, fuller, and less distorted midrange and treble reproduction and that’s what keeps them in the game. 

Now that you know what kind of amp to look for, you can start looking for the matching power ratings.

What About the Power Ratings?

In theory, finding the matching power ratings (outputs) is a simple thing. Unfortunately, there’s one problem that makes it much harder.

Let’s see what this process is supposed to look like. Assuming that you already have the speakers/subwoofer or, at least, that you have a certain speaker/subwoofer in mind, you should go through the specs and find the speaker’s impedance and RMS power rating (not peak power ratings).

After that, you just have to look for an amp with a matching or preferably higher RMS power output (again, not peak or max power output) for the specific impedance (the one that matches your speaker’s impedance). It all sounds super simple, right? 

Unfortunately, there’s one big problem with this process. In theory, the power ratings published in the user manual are accurate.

In practice, that doesn’t have to be true at all. In many cases, especially when it comes to cheap amps and generic brands, the power outputs are extremely overrated and don’t represent the actual capabilities of an amp. 

Amps made by brands like BOSS Audio, Planet Audio, Audiotek, or even Rockville, have bloated power ratings.

So, for example, if an amp made by one of these brands is advertised as 4000W (4000W is usually their peak power output), that amp can probably deliver only 25-30% of the advertised output. We are not saying that these amps are completely rubbish.

They usually offer decent performance for the price, but their false advertising is annoying.

We have included a few amps made by these brands (since they are all advertised as 4000W amps) in our list but we have also given you some calculations so you can know what to expect.

You need to know the actual power output so you can find the right match. If you already have some 2000W(RMS)/2Ω subwoofer, it would be a mistake to buy an amp that’s advertised as a 4000W amp but can only deliver 1000W RMS (or less).

So, is there something you could do to find out the real power output? Well, there are a few things.

First, if you need your amp to push the advertised power output, avoid cheap generic brands. Their performance is never as good as the manufacturer claims.

You can also try to calculate the actual max power output. If you know the max. allowed voltage (usually 14.4V). fuse rating (you can usually find it in the user manual), and efficiency (in some cases, it’s also given in the user manual but you can use the approximate values – .6 for Class-AB amps and .8 for Class-D amps), you can calculate the approximate value of the max power output.

The equation below is just a simplified practical form of Ohm’s law and can be used for any amp but it’s more appropriate for mono amps.

This equation will give you the max output which doesn’t mean much when you have to compare RMS outputs but it can tell you if an amp is capable of pushing the amount of power you need.

For example, let’s assume that you need at least 2000W RMS and that you are interested in some amp that’s supposed to deliver 4000W max. If your calculations show that the max output is 1000W, you should avoid that amp.

Another thing you can do is to look for CEA-compliant amps. CEA-2006 is a car amplifier standard that defines the way the RMS outputs are measured. If an amp has CEA-certified RMS power ratings, you can be assured that these ratings are real. 

You could also try to find some amp dyno tests. There’s a bunch of those on YouTube. These tests measure both RMS and Peak outputs.

They are the most accurate way of determining the actual RMS outputs but there are no amp dyno tests for every amp on the market. So, in many cases, you will have to calculate the maximum output on your own and then estimate the RMS output. 

Channels (mono, stereo, or multichannel amp)

This one is a no-brainer. Based on the number of speakers/subwoofers you want to add or replace, you will choose an amp with a matching number of channels. So, if you only want to add a subwoofer to the existing system, you should choose a mono amp.

Replacing two front speakers will require a 2-channel amp. If you want to replace two front speakers and add a subwoofer, 3-channel amp is the most convenient solutions.

I think you get the point – buying an amp with a matching number of speaker outputs (channels) is the most convenient solution. 

However, in some cases, buying an amp that has more channels than you have speakers could be a viable (more cost-effective) solution. For example, if you want to replace two front speakers and add a subwoofer, you could buy a 4-channel or 5-channel amp and use it in bridged mode.

Class-AB VS Class-D

Digital amplification (Class-D) is superior to analog (Class-AB) in terms of operating temperature and efficiency. So, why are Class-AB amps still in use? The answer is very simple – because they deliver better mids and highs. Class-D amps distort the midrange and high frequencies way too much and that’s why all the multichannel amps are Class-AB amps.

The situation is different when it comes to bass reproduction. Class-D amps offer more than satisfying performance with a controlled and punchy low end.

Also, the subwoofers require more power than small speakers and, since Class-D amps are more efficient and have cooler performance, they are more suitable for powering subwoofers. So, that’s why the majority of mono amps are Class-D amps.

Power ratings (Real versus advertised) and impedances

As you already know, you are supposed to buy an amp with a matching or higher RMS power output (per channel) for the given impedance. In theory, the process of choosing the right amp is simple.

In practice, there’s one big problem – power ratings published and advertised by the manufacturers don’t have to be accurate. In some cases, power outputs are extremely overrated. Especially when it comes to generic cheap brands.

Luckily, there are a few things you can do to avoid buying something that’s not good enough for your needs.

First, spend more and buy from renowned manufacturers. The thing is – it’s practically impossible to find an amp that can push 4000W max if you don’t pay more than $200. Amps that can push 4000W RMS are even more expensive ($300+).

Second, calculate the maximum power output on your own. If you know the recommended/max fuse rating and amplification type, you can calculate the approximate peak power rating by using the equation below (like we did in our reviews). 

Third, check if the amp is CEA-compliant. CEA-certified RMS power outputs are usually very accurate and you can be assured that these values represent the real capabilities of an amp.

Fourth, search for amp dyno tests. These tests can measure the RMS outputs (certified test) and max power outputs (dynamic power) and they are very accurate. Some of the tests are done by third parties (YouTube reviewers and amp enthusiasts) and some are done by the manufacturers themselves (Skar Audio and Orion are some of the manufacturers that publish their amp dyno tests on YouTube).

Features – inputs (RCA and high-level), preamp outputs, bridging and strapping capabilities, crossover filters, protection

There are a few things to pay attention to besides the number of channels, power ratings, and impedances. Some amps have only RCA (low-level) inputs while others have high-level (speaker-level) inputs, too.

If you have a factory radio (they usually have only high-level outputs) and you buy an amp with RCA inputs, you may need an adapter (high-to-low-adapter) with an appropriate number of input/output channels. 

If you want to pair two mono amps or one mono amp and one multichannel amp, you should pay attention to outputs. Some mono amps are strappable which means that you can strap/pair two amps together to get a higher power output. These amps usually have ‘’slave in’’ and ‘’master out’’ ports. 

Amp Size

When it comes to car equipment, size is very important. The space you can use is very limited and it’s only natural to pay attention to dimensions, especially when you know how big car amps can be.

The amps that can push 4000W RMS are quite chunky and they could never fit under your seat. Your trunk is probably the only possible placement option for a real 4000W amp. 

Wiring and installation

Unless you know your way around cars and have some advanced knowledge of car stereo systems, you should leave the installation to professionals. If you decide to do the installation on your own, you must not try to save money on wiring.

You could buy some cheap CCA amp wiring kit but, if you want your amp to shine, an OFC wiring kit is mandatory. OFC wire is a much better conductor than CCA wire and it doesn’t get as hot as CCA wire.