8 Best 4000 Watt Amps

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8 Best 4000 Watt Amps: For Your Car (2023)

Are you looking for something that will match your subwoofer 2000W/2

This article will give you some great ideas and useful tips.

This article will explain the purpose and importance of car amplifiers in car stereo systems.

We will also discuss the most important characteristics of car amplifiers and what to look for when buying them.

We will also provide some tips and tricks to help you avoid common problems and figure out the power output of your car amp.

Best 4000 Watt Amps

What Are The Benefits Of A Car Amp?

An essential component of any car’s stereo system is a car amplifier. An amplifier for your car is a device that amplifies sound from your car’s radio, and then transmits it to your speakers.

Most cars come with pre-installed amps, but they may not be the best. They are sufficient for pre-installed speakers but an external amp will be required if you want to upgrade.

It is virtually impossible to add a subwoofer to an amp or louder stereo speakers. It is possible, but it won’t give you the desired results.

It is important to have an amp that matches the speakers if you want the best performance.

Every speaker upgrade requires a new car amp, which includes a stronger subwoofer or stereo speakers.

An external amp can make even pre-installed speakers sound better.

Which Amp Should I Buy?

The answer to this question is simple. The best amp for you should be the one that meets your goals and needs.

The question really is, what do you want to do?

You might want to replace both the front and rear speakers or all three with a subwoofer.

You might be searching for a different type of amp depending on the answers.

If you are looking to add one subwoofer to your car’s speakers, a mono amp is the best choice.

Monoblock, also known as monoamp, is an amplifier with one speaker output. It is used for subwoofers only.

If you’re replacing 2 or more front speakers, you will need a 4-channel, 2-channel amp.

One amp can be used to replace all the speakers.

The subwoofer is powered by one mono amp, while the speakers are powered by a multichannel amp.

Mono amps that have RCA preamp outputs should be considered.

These RCA preamp outputs are useful for pairing two amps together.

When buying a mono amp, you should take into account the size and type of amplifier. Class AB and Class-D are the most popular.

They are less expensive than monoamps of the same type, but they are more efficient and can work at higher temperatures.

Mono amps that produce great bass are more suitable for Class-D than monoamps.

Multichannel amplifiers can be used to power tweeters or full-range speakers. Better options are Class-AB amplifying.

Digital amplification may be more efficient in terms power output but it also offers cooler performance and lower noise levels. It does however distort the highs and mids more than analog amplifier.

Class-AB amps sound cleaner, fuller, and less distorted than their treble and midrange reproductions, which is why they are still in business.

Once you’ve identified the amp type you desire, you can start looking for matching power ratings.

You may want to read: 8 Best 2000 Watt RMS Amps

Our Top Picks 8 Best 4000 Watt Amps

What are the Power Ratings?

It should not be difficult to locate the outputs (power ratings) that match. However, it is not an easy task.

Let’s look at what it should look like. If you have a good idea of the type of speaker/subwoofer that you are looking for, you can review the specifications to determine the impedance, RMS and peak power ratings.

Next, find an amp with a matching or higher RMS output for your specific impedance. It should match the impedance of your speaker. This sounds so easy.

One problem exists with this process. You should verify that the power ratings in the manual are correct.

In practice, this is false. This is often true with generic amps and cheap amps. The power outputs of amps can be exaggerated, which doesn’t always reflect their actual capabilities.

Brands such as Planet Audio and BOSS Audio use amps that have high power ratings.

An amp that is advertised at 4000W will only deliver 25-30% the advertised output. These amps don’t always turn out to be bad.

These are often quite affordable. Their misleading advertising can be very irritating.

These amps advertise as being 4000W amps. These amps have been included in our list. We also included calculations to help you understand what to expect.

You need to know the power output to find the right match. If you have a 2000W(RMS/2) subwoofer, it would be a mistake to buy an amp that claims it can output 4000W but delivers only 1000W RMS (or more).

Is it possible to calculate the power output? To determine the true power output, there are many things you can do.

If your amp has to produce the advertised power output, avoid cheap generic brands. They’re not as reliable and as trustworthy as they say.

You can also calculate the maximum power output. The maximum power output can be found here. The maximum voltage is typically 14.4V. The user guide will provide the fuse rating. Efficiency is sometimes also found in the manual. To calculate the maximum power output, you can use the values of.6 or.8 for Class-AB amps and Class-D amps.

This equation is a simplified Ohm’s Law. It can be used with any amp but is better suited to mono amps.

This equation calculates the maximum output. It is not the same thing as the RMS outputs. It can however help you to determine if your amp is capable of delivering the power you need.

For example, let’s suppose that you need at least 2000W RMS power, and that you are looking for an amp that can deliver 4000W maximum. Avoid amps with a maximum output of less than 1000W.

Also, you can search for CEA-compliant amps. CEA-2006 is a standard that defines the measurement of the RMS power outputs of car amplifiers. If an amp has CEA-certified RMS power ratings, you can be certain that it is genuine.

Also, you might want to look for amp dyno tests. YouTube has many videos. These tests can be used for measuring Peak and RMS outputs.

These are the best ways to calculate the RMS outputs. However, they are not available on all amps. It is often necessary to determine the max output, then calculate RMS output.

You’re now familiar with advertising basics and aware of the dangers associated with misleading information. Let’s move to the next section

Here is a list of 8 top 4000-Watt amplifiers. It can be broken down into three sections: the best 4000-Watt amplifiers under $100, the best 4000-Wattamps below $200, and the best 4000-Watt amps above $200.

We have created a section to accommodate the 4500-Watt amplifiers since there won’t be an additional list.

Warning: To get your amp running continuously at 4000W (4000W RMS), you will need to spend more then $200 Most amps under $200 can’t push 4000W in short bursts. Their maximum power outputs fall below 4000W.

Best 4000-Watt Amps Under $100

1. Ignite Audio R1600/1D

Editor’s Rating: (4 / 5)

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The Ignite Audio R1600/1D monoamp is a Class-D amp. This amp can only handle 4000W at maximum, but that is not what it claims. It can reach 1200W but that is all you can hope for. You can still get the Ignite Audio R1600/1D entry level amp for as low as 90 bucks.


R1600/1D comes with a wired remote control for bass and mounting screws. It also includes a user manual and a 1-year warranty.

It is lightweight and strong. It measures 13.7in long, 8.9in wide, and 2.1in tall.

Only RCA inputs are available (no high-level inputs). For strapping, there are two RCA bridge-in/bridge out ports.

R1600/1D includes subsonic and low-level filters. The subsonic crossover frequency ranges between 10Hz-50Hz and the low-pass crossover is 32-300Hz.

The amp also has a bass boost knob that can be turned. It also comes with a remote control to activate the bass booster. You can adjust the amp to increase bass volume up to 18dB. The phase can be adjusted from 0 to 180deg.

R1600/1D is fused at 90A (3 30Afuses) and digital (80% average efficiency). Based on our calculations, the amp’s maximum output of 1036W is possible.

amp Dyno Test indicates that the amp can generate up to 1200W. The amp’s maximum power output cannot exceed 4000W and should not be exceeded.

The manual lists RMS power outputs that are much more accurate. Amp dyno tests showed that it can generate more than 750W continuous (at one load), more than 530W at 2, and more than 300W when running at 4.

If your subwoofer requires more power, this amp can power it 500W/2.


  • Low-level inputs
  • Bridge-in and bridge-out RCA ports (strapping ability)
  • Variable subsonic (50Hz-50Hz), or low-pass (332Hz-332300Hz), filters
  • Variable bass boost (0-12dB)
  • Bass level remote
  • Adjustable phase (0-180deg)
  • Stable at 1
  • High performance at an affordable price


  • It doesn’t have any high-level inputs
  • The amp’s maximum power output (it can only reach 1200W) is very high.

Best 4000-Watt Amps Under $200

These amps are made by brands that don’t exist. These amps are reasonably priced, but they do not have the promised 4000W. They produce less power than they claim.

2. Rockville db14

Editor’s Rating: (4.2 / 5)

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Rockville is a budget-friendly brand. However, unlike other brands that have a budget, it has excessive maximum power ratings. Rockville DB14 is a Class D mono amp and is advertised at 4000W (4000W is the power peak), but it is not capable of pushing 4000W.

Rockville’s amps are CEA compliant and have the CEA’s RMS certified output. We love that fact.

We don’t like the fact that Rockville has three sets of ratings. They are CEA certified RMS rating (real Energy Outputs), Uncertified RMS ratings, which are much higher than CEA ratings. Also, they offer rating of peak power (some random number).

It can be confusing if you don’t know what to look for.


The dB14 amplifier, a remote control that can be wired up to the bass level user’s manual, warranty card, and a birth certificate (certificate with CEA rating) are all contained in the box.

The amp’s aluminum housing is brushed and features an illuminated Rockville logo at its top. It looks quite stylish. It measures 15.5in in length, 9in wide, and 2.4in high.

Only one pair of RCA inputs and an additional set RCA preamp outputs are included in the amp. An RCA outlet is available for strapping with master-in/slave out switching. You will need an adapter if your car radio doesn’t have RCA outputs.

Variable subsonic and low-pass filters are available in dB14. The subsonic crossover frequency range is from 15Hz to 55Hz, while the low-pass crossover spans between 50Hz and 250Hz.

You can adjust the bass response by using the bass boost knob and the bass level remote. This allows you to increase the volume up to 12dB. You can also adjust the phase of the amp (0-180deg).

The dB14 fuse has a 100A rating (it uses two 50A external fuses) and an efficiency of 80%. In our calculations (see below), this gives you a maximum power output of 11.52W. It can produce up to 1200W, according to amp Dyno Test.

The amp can’t produce 4000W, so that is the conclusion. 4000W is just an advertising trick.

CEA certifies that RMS outputs can be produced at very high levels. The amp dyno test also shows similar results. The dB14 can generate 1000W per minute (at 2.). It can produce 600W at 4.

The dB14 is a great value for money. The amp can power a subwoofer up to 1000W/2. This amp won’t provide 4000W power or 4000W RMS.


  • It’s simple and easy to install
  • RCA inputs
  • RCA preamp outputs
  • Master-in/slave out RCA port (strapping capability)
  • Flexible low-pass crossover filters (50Hz-250Hz), as well as subsonic (15Hz-60Hz) filter options
  • Bass boost (0-12dB)
  • Bass level remote
  • Adjustable phase (0-180deg)
  • Stable at 2
  • 1000W continuous power output with 2 (CEA certified)


  • It is not stable in 1
  • The advertised maximum power output is way too high.
  • It doesn’t have high-level inputs.

3. Planet Audio BB4000

Editor’s Rating: (4.3 / 5)

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Planet Audio is also a generic brand known for its underrated outputs. Although we have never been impressed with Planet Audio’s amps, this model is slightly more impressive than others.

The amp BB4000, which is Class-D, has a 4000W output. Although it won’t reach 4000W, it is superior to budget amps priced below $200.


The Planet Audio BB4000 amp, a bass level remote, mounting screws, and a user’s manual are included in the package.

Although the amp is not very small, it does require planning and measurement. The dimensions of BB4000 are 16.4in long, 7.8in wide, and 2.3in high.

The amp has RCA (low level) inputs and RCA amp outputs. However, it does not include high-level inputs and will require an adapter if your factory radio doesn’t have RCA outputs.

Variable low-pass and subsonic filters can be adjusted in BB4000. The subsonic spectrum is 10Hz to 50Hz, while the low-pass crossover frequency range is from 50Hz to 250Hz.

You can amplify bass by as much as 18 dB. You can use the included remote to control the amp’s bass level and the knob to increase it. You can also choose the frequency that you wish to increase (40Hz – 100Hz). You can adjust the phase (0-180deg).

It is fused with 250A (it uses an inline fuse externally 250A), and it is digital, which means that the efficiency of the amp is around 80 percent. According to our calculations, the amp can reach 2880W. An testing device showed that the amp could pass YouTube. The test results showed lower numbers (2160W Dynamic Burst).

The RMS ratings stated are slightly optimistic. The amp is stable at 1. It is expected to reach 3000W RMS at 1500W at 2.00. 500W at 4.

According to the test, you will receive 1930W RMS at one 1, 1100W 2 and 620W 4 respectively. Although it isn’t terrible, it’s still far below what they claim to be 3000W per hour. One subwoofer can be powered by the amp at 1000W/2.


  • Compact
  • RCA inputs
  • RCA preamp outputs
  • Subsonic variable (10Hz-50Hz), with low-pass filters (50Hz-250Hz).
  • Adjustable boost to the bass (0-18dB) or a variable Bass boost rate (40Hz-100Hz).
  • Bass level remote
  • Adjustable phase (0-180deg)
  • Stable at 1
  • 1930W RMSx1 (at 1)


  • It doesn’t have top-level inputs.
  • The RMS and peak RMS values advertised are exaggerated.

Best 4000-Watt Amps Over $200

You will need to spend more than $200 if you really want an amp capable of pushing up to 4000W (peak power) You’ll likely need to spend more than $300. These amps are made by reliable companies and offer a significantly better performance than the cheaper models.

4. Hifonics BXX4000.1D

Editor’s Rating: (4.5 / 5)

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This list includes Hifonics, which is the most trusted name. Hifonics has over 35 years of experience in car audio equipment manufacturing, so you can be sure they will build an outstanding amplifier.

Although the quality of their amps has decreased slightly over time, they are still excellent. They are definitely superior to other brands. The Hifonics BXX4000.1D mono-amp in Class D has a maximum power output of 4000W.

We don’t like Hifonics amplifiers the most. They do not have RMS ratings. These ratings are not even mentioned in the user’s guide. This is misleading and insincere.


You will also receive the BXX4000.1D, an electronic bass remote to level and mount screws, aswell as the user’s manual and a warranty card. This wiring kit must be purchased separately.

This amp features the well-known Hifonics design with its backlit Hifonics logo and speakers, shiny aluminum housing and large heatsinks.

It is similar to the amps from its Brutus series but slightly larger. It measures 23.1in long. It measures 9.2 inches across and 2.5 inches tall.

BXX4000.1D features low-level RCA inputs. This unit does not include high-level inputs. It also has RCA input and output ports for strapping (slave-in/master-out).

The amp has subsonic and low pass filters with variable frequencies. The subsonic range is between 15Hz to 35Hz, and the low-pass range is 35Hz to 250Hz.

If you wish to amplify the bass, it can be done by turning up the volume to as high as 10 decibels. The knob to boost the bass on the amp or the remote can be used. You can also adjust the phase (0-180deg).

BXX4000.1D has fuse ratings of 275A (it also has an external fuse 275A). According to our calculations, it could push 3168W.

We could not find any amp dyno test for this amp so we don’t know its power but can tell with absolute certainty that it is high.

According to specifications on the manufacturer’s official website, the amp can produce 4000W at 1 and 2000W at 2. It also has the ability to produce 1000W at 4. These are the maximum power outputs.

We don’t have a dyno for BXX4000.1D, so we can only guess (based on tests on other amps in the Brutus series), that the amp will go above half the maximum value. You can also expect that the amp will reach 2500W at minimum and 2000W at maximum.

The protection of BXX4000.1D includes three levels: overload, short circuit and overheat.


  • Low-level RCA inputs
  • RCA slave-in and master-out ports (strapping capabilities).
  • Flexible subsonic (15Hz to 35Hz) and low-pass (35Hz–250Hz) crossover filters
  • Variable bass boost (0-10dB)
  • Bass level remote
  • Stable at 1
  • At 1 watt, you can get a power output of 2500W+


  • It doesn’t have high-level inputs.
  • The advertised power output peak does not accurately reflect the actual power output.

5. Massive Audio E4

Editor’s Rating: (4.4 / 5)

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Massive Audio has been manufacturing car and marine audio equipment (amps, speakers) for over a decade.

The E4 amplifier is an upgraded version of the N4 amp, which was part of their Nano Block series.

The E4 mono-amp is a Class D. E4 is a mid-range amplifier. Although the advertised power output of 4000W is impressive, it does seem a bit excessive. E4 costs just $350.


The box contains the Massive Audio E4 amplifier, user’s manual and a few mounting screws.

There is also a warranty card. This amp is not equipped with a bass control.

You will need to buy the remote separately if you want to. This wiring kit is also required.

The amp’s design is elegant and simple. The amp’s aluminum housing has been brushed with the Massive Audio logo at the top.

E4 is similar to the Nano Block amplifiers. It has a small power output. It measures 14.1in long, 5.9in wide, and 2.1in high.

E4 features RCA low-level inputs. Although the amp does not have high-level inputs it can still receive high-level signals.

Contrary to other amps this price, E4 does not have RCA preamp outputs, nor RCA ports.

The amp has a subsonic crossover feature and variable low-pass filters.

The low-pass range of the amp is 60Hz to 220Hz, while the subsonic crossover can be used between 0Hz-60Hz.

You can increase it by up to 12dB. You can either use the remote or the bass knob on the amp to increase the volume.

You can also choose the frequency that you want to increase (30Hz-120Hz).

The recommended fuse rating should be 200A (inline fuse).

Our calculations (see below) show that the maximum capacity is 2304W.

This is not even close to the 4000W advertised.

YouTube doesn’t have any amps dyno tests, but there are some tests for other Massive Audio amps to give you an idea of their power ratings and actual capabilities.

We found that their RMS rating was more accurate than their peak outputs.

E4 can continuously produce 2000W at 1,000W at 2.00. 650W at 4.

This amp includes next-generation five-way protection.


  • Compact and small
  • Low-level RCA inputs
  • Flexible low-pass filters (60Hz-220Hz), with subsonic (0-60Hz).
  • Programmable bass boost (0-12dB) with adjustable frequency (30Hz-120Hz).
  • Stable at 1
  • 2000W power output at RMS level 1. (1000W RMS for 2).


  • No high-level inputs
  • Unstrappable
  • The remote for the Bass is not included in the kit. It can be purchased separately.

6. Lanzar OPTI4000D

Editor’s Rating: (4.6 / 5)

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Lanzar OPTI4000D has been available for more than 10 years.

Although it is extremely powerful and heavy, it is not the most efficient amp, even though it is Digital (Class D).

The amp’s cost is approximately $700. This is not the only cost. You’ll need extra batteries or batteries for the amp.

We believe you can probably get a better value for the same price.

However, if your focus is on the power output, this amplifier will satisfy you.

The amp claims a 4000W RMS power at 1 power. Although the amp’s advertised RMS ratings are lower than what it actually is, the tests show that it is very powerful.


You will also receive the amp and a wired user’s manual, along with the mounting screw and warranty card. An electrical kit (1/0-GAUGE for ground and power terminals) will be required.

The amp is large and cannot be placed on the floor. It measures 24.5in in length, 11in across, 2.5in high, and weighs 39 lbs.

OPTI4000D has RCA (low level) inputs and RCA Line outputs. It doesn’t have high-level inputs.

Variable low-pass and subsonic crossover filters are available. The crossovers’ low-pass frequency range is 50Hz-250Hz and the subsonic spectrum is between 15Hz and 40Hz.

You can increase it by up to 18dB. An adjustable bass knob or the remote can be used. You can change the phase (0-180deg).

300A is the recommended fuse. According to our calculations, the amp can boost up to 3456W. The amp test on the Dyno shows that it can push 4000W, but not always. We didn’t like the amp’s effectiveness.

It’s class D, but tests have shown that it is less efficient than 70%. The amplifier is very demanding and requires a lot of power. You will need to upgrade the alternator or buy an additional battery.

The company claims that the OPTI4000D is capable of offering 4000W continuously for a period of 1 3000W at 2, and 2000W at 4.

The amp’s dyno test yielded lower numbers: 2850W RMS @ 1 25,70W at 2 and 1600W RMS At 4. It’s very efficient but not as effective, as the manufacturer claims.


  • Low-level RCA inputs
  • Outputs from RCA lines
  • Capabilities for Strapping
  • Subsonic variable (25Hz-40Hz) and low-pass crossover filters (50Hz-250Hz), are available
  • Variable bass-boost (0-18dB)
  • Remote Bass
  • Adjustable phase shift (0-180deg)
  • Stable at 1
  • 2570W power at 2850W. (2570W at your current location)


  • Expensive
  • At the highest level, there are no inputs.
  • Low efficiency for amps with Class-D specs
  • Actual RMS ratings may not be comparable to claimed RMS power ratings.

Honorable Mention – Best 4500-Watt amps

We won’t be creating a separate list of top 4500-watt amps, so it would be remiss to not mention the following two amps. The following amps are worth considering if you have the budget to spend more than 500 bucks and need a machine capable of consistently pushing 4500W.

7. SoundQubed Q1-4500.1

Editor’s Rating: (4.9 / 5)

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The SoundQubed Q1-4500.1 monoamplifier is a powerful Class D amplifier. This amplifier can output over 4000 W continuously. This amp will require you to upgrade your alternator and battery.

The only problem is the price. The amp costs less than $750. The amp is available for less than $750 once you consider all expenses (wiring kit, electrical upgrades, and installation). It will cost more than $1,000 (probably around $1500).


You will also receive the amp with wired mounting screws, an instruction manual, and an insurance card. You can purchase the wiring kit separately. 1 gauge wire could be used for ground and power terminals.

The Q1-4500.1 amp’s design is very similar to Skar Audio amps. It is very heavy and large. The amp measures 25.9in in length, 9.5in wide, 2.6in high, and 30lbs.

Q1-4500.1 features RCA inputs, and an RCA port to strapping (paired with a master-out/slave-in/master-in switch).

The amp includes subsonic and low pass filters. The subsonic range covers 10Hz-50Hz and the low-pass crossover range ranges from 20Hz to 200Hz.

You can increase the bass up to 6dB. The bass knob on the amp can be used or the remote.

The 300A fuse is the most preferred. Q1-4500.1, according to our analysis, can produce up to 4608W peak power. This beast can actually go further.

The RMS rating for power is impressive as well. Q1-4500.1 can produce 4560W continuously over a period of 1 22,80W @ 2, or 1400W @ 4. This amp is a great amp. It could only be made more affordable.

Q1-4500 includes overheating protection, short circuits, DC offset, as well as low and high voltage protection.


  • Low-level RCA inputs
  • Strapping capabilities (master-out/slave-in port)
  • Low-pass variable crossover filters (20Hz-200Hz), as well as subsonic (10Hz-50Hz).
  • Adjustable bass boost (0-6dB)
  • Remote Bass
  • Stable at 1
  • Amazing performance of the RMS (4560W 1for1, 2880W x 2 at 2)


  • Expensive
  • It doesn’t have high-level inputs.

8. Skar Audio RP-4500.1D

Editor’s Rating: (4.9 / 5)

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This listing lists the best option, a Skar Audio RP4500.1D. The RP-4500.1D is smaller than the SoundQubed Q1-4500.1D, but it has similar output capabilities. It’s also less expensive (priced at 600 dollars).

The Skar Audio RP-4050.1D is the ideal choice if you want to save money and still get a powerful 475-fivewatt powerhouse.

This monoamp is classified D and has a maximum power output of 7000W. Like all the amps, RP-4500.1D requires significant electrical modifications (additional battery, high-output alternator).


The RP-4500.1D audio remote includes a level, user guide and a 1-year warranty. Separate wire kits available (power and ground connectors are compatible with the 0-Gauge cable).

This amp is massive. It measures 22.1in in length and 8.3in across. It also stands 2.4in high.

You have two RCA inputs for connectivity (no high level inputs), RCA preamp outs (for pairing a multichannel amp), as well as RCA master-in/slave-out ports to allow strapping.

The RP-4500.1D has adjustable subsonic (50Hz-50Hz), and low-pass (335Hz-250Hz), crossover filters.

You have more control over the bass quality with the wireless remote and bass boost knob. If you wish, you can increase the bass to as high as 9 dB. You can also change the frequency (0 to 180deg).

The fuse for this amp is at the 450A (external inner fuse). Based on our calculations (see this equation), the RP-4500.1D can produce 5184W peak power. The amp testing yields even stronger results.

At 1 2900W at 2, and 1600W at 4, the amp can push 4500W continuously. The RP-4500.1D amplifier is an excellent choice if you need power for two subwoofers with 1500W.

The amp includes four protection circuits, including overheat overload and short-circuit protection.


  • RCA (low-level) inputs
  • Strapping options (slave in/master-out RCA input).
  • RCA preamp outputs
  • Variable subsonic and low-pass filters
  • Variable bass booster
  • Bass level remote
  • 1 stable
  • Incredible RMS power output – 4500W at 1200W 2


  • Expensive
  • It doesn’t have top-level inputs.

Here’s the end of our 8 Best 4000-Watt Amps.

We hope you found something that was suitable for your needs on this list.

Let’s take a moment to recap.

This is a list of things you should consider when purchasing a new car amp.

Channels (mono stereo, mono, or Multichannel Amp)

This is an easy decision. You should choose an amplifier with a similar number of channels based on how many subwoofers you want to replace or add. Mono amplifiers are best if you only need to add a subwoofer to your existing system.

A 2-channel amplifier is required to replace two speakers at the front. A 3-channel amplifier is best if you want to replace 2 speakers and add a subwoofer.

You’re probably clear on the point: buying an amp compatible with the number of speakers outputs (channels), is the best choice.

In certain cases, however, an amp with more channels may be more cost-effective and efficient than the speakers. If you are looking to replace the front speakers with a subwoofer and also get a four-channel amp, then you can choose from either a five-channel amplifier or ten-channel amp. The amp can be put into bridged mode.

Class-AB VS class-D

Class-D digital amplifying has a higher efficiency than analog (Class -AB) in terms operating temperature and effectiveness. Why are Class-AB amps still being used? It is simple: they provide better quality middles and highs. All multichannel amps must be Class-AB because Class-D amps can distort high frequencies and mid-range too much.

Bass reproduction is an area where there are many options. Class-D amplifiers offer a pleasing performance with a powerful and controlled low end.

Subwoofers also require more power than smaller speakers. Because Class-D amplifiers are more efficient and offer greater cooling, they are better suited to power subwoofers. This is why monoamps are overwhelmingly Class D amps.

Energy ratings (Real and not Advertised) as well as impedances

As you know, an amplifier must have a matching or higher capacity per channel to the specific impedance. It is easy to choose the best amp.

There is a problem. Manufacturers do not need to publish exact power ratings. Sometimes power outputs can be severely exaggerated. This is especially true for generic and cheap brands.

There are some things you can do that will ensure you don’t buy something that isn’t right for you.

Buy from the best manufacturers and spend more. It’s almost impossible to find an amp that can push 4000W maximum if you don’t pay more than $200. Amplifiers capable of reaching 4000W RMS are usually more expensive (about $300). ).

Next, calculate the maximum power output of your system. The maximum recommended fuse rating and amplifying type are known. You can then calculate the approximate power output using the equation below (similar to the one we used in the reviews).

Third, ensure that your amp is CEA certified. CEA-certified power output values are usually very accurate. These figures are accurate and reflect the amp’s actual capabilities.

Fourth, you can look up Dyno tests for amps. These tests are very precise and determine the RMS outputs (certified testing) and maximum energy outputs. Some tests are done by third-party companies (YouTube reviewers and testers of amps), while others are done by the manufacturer (Skar Audio and Orion are two examples of brands that test amps via YouTube).

These features include inputs (RCA, high-level), preamp outputs, strapping, bridging capabilities with crossover filters and protection

You should consider other factors than the number of inputs, power rating, and impedances. Some amps have RCA inputs (low-level), while others have higher-level inputs (speaker levels).

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.

Be aware of the outputs if you plan to pair two mono amps (or one amp), with one multichannel amp. Mono amplifiers may be strappable, which means that two amps can be connected to increase their output power. These amps usually have master out and slave out ports.

Size of the Amp

It is crucial to take into account the dimensions of car accessories. Because there is limited space, it is natural to be concerned with the dimensions. This is especially true when you consider how large amps can get.

Amplifiers that can push 4000W RMS are extremely large and will not fit under your car. You will most likely only have one option for a 4000W amplifier: your trunk.

Installation and wiring

It is best to leave the installation to professionals if you are not familiar with cars or don’t have a good understanding of car stereos. It is not a smart idea to attempt to install the wiring yourself.

Although you can purchase a CCA amp wiring kit at a low price, it is essential to have an OFC wiring kit in order for your amp’s performance. OFC wire is a better conductor than CCA and won’t get as hot as CCA wire.

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