Best 4000 Watt Car Amps [4k Power]

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If you’re looking for something that can really power your subwoofer, then I would recommend 4000-Watt amps. The 4000 Watt amps on this list are extremely powerful. They strike a good balance between sound quality and overall durability at a reasonable price. Furthermore, they function quite efficiently and produce a rather clear and detailed sound profile.

We also did a lineup of 1000W, 2000W and 3000W amps.

Lanzar OPTI4000D

The Lanzar OPTI4000D is—for the lack of a better word—a beast and it’s the only amp on this list that can provide 4000W of RMS power. It is because this amp can produce highly impressive sounds and power. If you are looking for pure power, then you will not find many better amps than the OPTI4000D.

This monoblock Class D amplifier has a Pulse Width Modulated MOSFET power supply and Variable Bass Boost of 0 to +18 dB. Additionally, 3-Way System Protection circuitry, including thermal, overload, and speaker short protection ensures the amp can produce impressive sounds at increased levels without any disruption.

Power (Peak Power and RMS Power)

The Lanzar OPTI4000D packs a powerful punch when it comes to the handling of audio.

  • @4 ohms: 2000 watts RMS
  • @2 ohms: 3000 watts RMS
  • @1 ohm: 4000 watts RMS

Frequency Response

The audible frequencies handled by the Lanzar OPTI4000D are quite decent. The amp has a frequency response of 20 Hz – 250 Hz, with low pass frequencies of 50 – 150 Hz.


The Lanzar OPTI4000D has an output impedance of 1, 2, and 4 ohms. This is complemented by a signal-to-noise ratio of 90 dB and a distortion factor of 0.1%.

Design and Appearance

The Lanzar OPTI4000D has dimensions of 2.8″ x 10.2″ x 11.4″. The amp has plenty of features that allow it to perform at the level that it does. These features include bass level remote control, gold plated connectors, overload protection, short circuit protection, subsonic filter, thermal protection.

Massive Audio Nano Edge E4

The Massive Audio Edge is a razor-sharp piece of audio that should be approached with caution! There are various cutting-edge capabilities on the Nano Edge Series Monoblock Class D Amp. Inputs that handle RCA or speaker level inputs with a voltage of up to 10 volts.

Built-in OEM line converter saves money. Also included is a 12 dB bass boost that can be adjusted. The RAIL CAP-E 4 farad capacitor, available separately, is also compatible with the E4 1 channel amp.

Power (Peak Power and RMS Power)

The Massive Audio Nano Edge E4 amp can handle sounds up to increasingly elevated levels. It is due to its precision audio features and peak power handling of 4000 watts. The RMS power offered by this amp is 2000w @ 1 Ohm and 1000w @ 2 Ohm.

Frequency Response

“EDGE” can be set as a high pass or low pass at 3K Hz, configurable up or down, or even Band Passed, allowing for more output control when used with raw drivers. Overall, the Massive Audio Nano Edge E4 has a frequency response of 10Hz – 220Hz, which is quite decent for such a powerful amp.


When it comes to resistance, the Massive Audio Nano Edge E4 amp offers a minimum impedance of 1 ohm and a maximum impedance of 2 ohms. Additionally, the amp has a signal-to-noise ratio of greater than 80 dB, ensuring that sounds are not distorted up to a high level.

Design and Appearance

Every “EDGE” model has a built-in OEM line converter to save money, and each E4 model uses a DC off-set music sensing technology to enable the ATO (Auto Turn On).

The other audio-enhancing functionality of the amp includes X10 switch on all 2, 4, and 5 channel amp crossover adjustments, an adjustable 1 band parametric EQ with up to 12 Db bass boost, a preparatory docking input for optional custom matching Massive Audio 4 farad “Rail CAP” capacitor, and a switchable 12V Out terminal.

Hifonics BXX4000.1D Brutus

For efficient high amplification, this 4000-watt mono 1-ohm amplifier features Super Class D technology and an NGSD digital chip. For enhanced power, it has Ultra-Fi MOSFET outputs. If you want greater sound quality and are ready to pay a little more, the Hifonics BXX4000.1D Brutus is the finest 4000-watt amp that you can get.

Power (Peak Power and RMS Power)

The amp can deliver plenty of power. Additionally, it has a wired bass remote and illuminated indicators that monitor overload and ensure speaker short protection. In terms of power you can get the following:.

  • 1000W Max x 1 @ 4 ohms
  • 2000W Max x 1 @ 2 ohms
  • 4000W Max x 1 @ 1 ohm

Frequency Response

The low-pass and subsonic filters can be adjusted on the BXX4000. The subsonic frequency range is 15 to 35 Hz, whereas the low-pass crossover frequency range is 35 to 250 Hz. Overall, the amp has a frequency response of 10 – 250 Hz.


The Hifonics BXX4000 has an impedance of 1, 2, and 4 ohms at 1 channel but with different powers. Coupled with a signal-to-noise ratio of greater than 95 dB, this ensures minimal distortion at increased levels.

Design and Appearance

The amp gives you an incredibly efficient, low-temperature, a high-amplification system that only the best can offer. The Ultra-Fi TM MOSFET outputs are chosen for their stability and output power. This ensures the power is steady even when the music is at its most demanding.

Autotek MM4020.4 4-Channel

The MM4020.4 from Autotek is part of the manufacturer’s Mean Machine series and it’s the only 4-channel 4000-watt amp on this list. Autotek engineers have made a concentrated effort to build technology that delivers high-powered music with the Mean Machine line. The audio is powered by the MM line, which has low output distortion.

Low-noise electronic crossovers deliver just the right amount of vital middle and high-frequency data to the speakers. The same crossover regulates the most important low frequencies that are transmitted to larger speakers designed for bass and sub-bass audio reproduction.

Power (Peak Power and RMS Power)

  • @ 2 OHMS 4 x 1000 Watts
  • @ 4 OHMS 4 x 500 Watts
  • MONO BRIDGED @ 4 OHMS 2 x 2000 Watts

Frequency Response

With integrated electronic crossover, an electronic equalization controls amp output and tailors appropriate frequencies to speakers and subwoofers. The MM4020.1D has an overall frequency response of 15Hz – 250Hz, with a variable low pass crossover frequency of 40Hz – 300Hz and subsonic filter frequency of 10Hz – 40Hz.


The 4 channel operation mode of the MM4020.1D allows unbridged of 2 and 4 ohms and bridged impedance of 4 ohms.

Design and Appearance

A low voltage circuit brings the maximum low voltage signal from the source unit into the amp, ensuring minimal distortion throughout the amplification process. The amp has FULL, LPF, and HPF controls for comprehensive signal control, which is critical when using two or more amplifiers.

A blue wash of light emanates from the heatsink’s underside thanks to a heavy-duty aluminum alloy heatsink with lighted connectors. Finally, additional amplifiers can be run from the “output” RCA connections with full-range signal pass-through output, reducing the need for extra cables running the length of the car. This can significantly reduce noise.

American Bass PH-4000.1-MD

The compact Phantom Series amps from American Bass are capable of high-power output, great efficiency, and demanding loads. American Bass came up with five different models that are both dependable and reasonably priced to achieve the objective. The Phantom Series amps are one of the most dependable automobile amplifiers on the market, thanks to their integration of cutting-edge technology.

Power (Peak Power and RMS Power)

The PH-4000.1-MD-V2 matches the other amps on the list in terms of power, with peak power handling of 4000 watts and RMS power of 2000 watts @ 1-Ohm stable.

Frequency Response

When it comes to resistance, the PH-4000.1-MD-V2 amp can handle audible frequencies up to a reasonable level. The amp has a frequency response of 10 Hz – 220 Hz, which is identical to that of the Massive Audio Nano Edge E4 amp. The subsonic frequency range is 10 to 50 Hz, whereas the low-pass crossover frequency range is 40 to 220 Hz.


The PH-4000.1-MD-V2 has an impedance of 1 Ohm Stable at 1 channel. This is complemented by a Switchable Bass Boost with varying levels, i.e., 0dB, 6dB, and 12dB.

Design and Appearance

The dimensions of the PH-4000.1-MD-V2 compact amp are 2.2″ x 6.0″ x 14.2″. This amp is designed for long-lasting, top-of-the-line performance, with features like high/low voltage protection, compact size, and small footprint, overhead, overload, double-sided PCB and SMD components, full MOSFET design, noise-free design, and adjustable bass boost.

Planet Audio PL4000.1D

Prepare to be stunned by the power of Planet Audio’s Pulse Series, which offers more power, flexibility, and earth-shattering sound. The PL4000.1D is a 4000-watt class D monoblock amp designed to shake up your automobile audio system. Low-level inputs, RCA preamp outs, and switchable phase control are all included in this amp.

The Planet Audio PL4000.1D amplifier strikes an excellent price-to-performance ratio. It has a MOSFET power supply, and you may select from a variety of amps with different power ratings.

Power (Peak Power and RMS Power)

Planet Audio’s monoblock amplifiers use Class D technology to deliver tremendous levels of power in a small package for clean, powerful bass.

  • Up to 3000 W X 1 RMS @ 1 ohm
  • Up to 1500 W X 1 RMS @ 2 ohm
  • Up to 750 W X 1 RMS @ 4 ohm

Frequency Response

Like the other amps on the list, the PL4000.1D can handle audible frequencies up to a reasonable level. The amp has a frequency response of 15 Hz – 150 Hz, with variable low pass frequencies of 50 – 150 Hz.


Overall, the PL4000.1D has an impedance of 1, 2, and 4 ohms at 1 channel. This amplifier accepts 1 ohm as the lowest impedance. The most power can be obtained from an amplifier that is 1 ohm steady. An amplifier that can give power to a 1-ohm load is normally reserved for serious subwoofers.

Design and Appearance

The variable low pass crossover, variable bass boost, and variable subsonic filter allow you to fine-tune your settings. Additionally, for convenience sake, remote subwoofer control, as well as a stylish blue lighted Planet Audio logo and end panel strips, are included with the amp.

The thermal protection circuit switches the amplifier off and allows it to cool before turning it back on if it becomes too hot.

Additionally, the strapping capability means that two amplifiers can be connected together to produce twice the power at a 2-ohm impedance. Finally, the Variable Bass Boost lets you customize the low bass within the boost range to your preferences.

Dyno test

Last update on 2024-05-18 / Affiliate links / *Image Disclaimer: We use images/data from Amazon Product Advertising API solely on products that link to Amazon. On products with the "Price at Crutchfield" button, we use images/data from as per the partnership deal.

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