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Best Monoblock Subwoofer Amplifiers 2022

Best Monoblock Subwoofer Amplifiers 2022
Best Monoblock Subwoofer Amplifiers 2022

If you want the best monoblock car amplifier for powering your subwoofer, go with a Class D!

These are more efficient than traditional A/B amplifiers and generate less heat; making them ideal in regards with safety concerns or vehicle prescriptions which may limit some equipment capabilities like amping up too much volume without causing damage due excessive temperature levels rising above recommended limits.

Class D amplifiers are more efficient than traditional Class A/B amplifiers and generate less heat, making them ideal for use in a car. In addition, Class D amplifiers tend to have more power output than their A/B counterparts.

When it comes to purchasing a Class D amplifier, there are a few things to consider, such as power output, efficiency, and cooling. We’ll go through all of these topics in depth below so you can pick the finest Class D amplifier for your car audio system.

Power Output:

The power output of an amplifier is one of the most important factors to consider. You’ll want to make sure that the amplifier you choose can provide enough power to drive your subwoofer(s) at the level you want. Most Class D amplifiers have a power output of between 1,000 and 4,000 watts.


The efficiency of a Class D amplifier is much higher than that found in any other classes. This means they consume less electricity and produce far fewer heat levels, which greatly benefits your car’s audio system! Most brands offer an average range from 70% to 90%.


Since Class D amplifiers generate less heat than their Class A/B counterparts, they don’t require as much cooling. However, it’s still important to make sure that the amplifier you choose has adequate cooling. Most Class D amplifiers have some form of built-in cooling, such as a fan or heatsink.

Now that you know the basics of Class D amplifiers, let’s take a look at some of the best options on the market.

Top 4 Best Monoblock Subwoofer Amplifiers [2022 Reviews]

Pioneer GM-D9701: The Best Monoblock Amplifier [Class D]

The  GM-D9701 is one of the best monoblock car amplifiers on the market. It’s a Class D amplifier that delivers up to 500 watts RMS of power, making it perfect for powering subwoofers. 

The build quality is excellent, with a high-density split-dome convection heat sink that dissipates heat quickly and effectively. The amplifier also features MOSFET modulated power supply, wired remote bass level control, variable bass boost, preamp outputs to multiple amplifiers, 3-way protection circuitry, and dual speaker terminals. The sound quality is superb, with tight bass and clear highs. 

This amplifier is extra-efficient, meaning that it is able to output more power than other amplifiers on the market while being 50% smaller. That makes it more versatile and easier to install, not to mention its impressive performance capabilities. 

The Monoclass D design means that this amp is highly efficient, meaning it doesn’t waste energy and runs cool even during long listening sessions. And the advanced protection circuitry ensures that your speakers are protected from damage, even if there’s a sudden surge of power.

This amplifier delivers an impressive 2400 watts of pure mono audio output, perfect for driving subwoofers and giving your music the thump and punch you crave. For extra flexibility, a variable LPF makes audio frequency more adjustable according to subwoofer characteristics and personal listening preferences. 

The GM-D9701 LPF is adjustable from 40 Hz to 240 Hz. With its easy installation and superior sound quality, the Pioneer 2400W MONO CLASS D Mono AMP is the perfect way to upgrade your car audio system

Additionally, the Bass Boost Remote allows you to optimize the bass level according to your listening preferences and the characteristics of the music you’re playing.

Overall, the GM-D9701 is an excellent car amplifier that will deliver great sound quality and power. Highly recommended!


  • Excellent build quality with high-density split-dome convection heat sink
  • MOSFET modulated power supply
  • Wired remote bass level control
  • Variable bass boost
  • Preamp outputs to multiple amplifiers
  • 3-way protection circuitry
  • Dual speaker terminals
  • Superb sound quality with tight bass and clear highs
  • Highly efficient Monoclass D design
  • Advanced protection circuitry


  • Installation can be a bit tricky for those who are not familiar with car audio systems
  • The amplifier is not cheap, but it is worth the price for its quality and performance.

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Rockford Fosgate R2-250X1: Best Budget Monoblock Amps

Rockford Fosgate R2 250X1 Best Budget Monoblock Amps

The  Rockford Fosgate R2-250X1 Mono Amplifier is a powerful and compact unit that delivers amazing bass response. 

This full-range class-D mono amplifier is packed with 250 Watts of RMS power, making it more than capable of delivering the big sound you want. And its compact size (1.9″ x 6.8″ x 8.1″) means it can fit just about anywhere in your vehicle.

With its incredible RMS power, the R2-250X1 Mono Amplifier can push out 150 watts at 4 ohms or a whopping 250 watts of power at 2 ohms! And because it uses Class D technology, it’s extremely efficient – meaning it won’t put a strain on your vehicle’s electrical system.

This amazing amplifier features C.L.E.A.N. circuitry to help you adjust your gain settings for the perfect sound, a P.O.W.E.R. Supply that generates more power as voltage increases, and integrated Punch EQ that corrects for acoustic deficiencies while delivering up to 3X the bass. 

A variable infrasonic filter lets you tune the bass level to your liking, while a remote level control gives you ultimate control over the sound. Plus, it comes with a full 1-year warranty when purchased from an authorised reseller.


  • 250 watts of RMS power for incredible sound output
  • Compact size for easy installation
  • Class D technology for efficient operation
  • C.L.E.A.N circuitry for easy sound adjustment
  • P.O.W.E.R Supply for increased power at high voltage
  • Punch EQ for enhanced bass response
  • Variable infrasonic filter for customisable bass
  • Remote level control for easy sound adjustment
  • 1-year warranty for peace of mind


  • Not waterproof or weatherproof for use in exposed areas
  • Requires separate purchase of wiring and installation kit
  • May be too powerful for some car audio systems
  • Could cause battery drain if not used properly

Alpine S-A60M S-Series: Another Great Monoblock Amp

Alpine S-A60M S-Series: Another Great Monoblock Amp

The  Alpine S-A60M is a great mono subwoofer amplifier for those who want big bass power without taking up a lot of space. This small package packs a punch, and makes it easier to get great bass in your vehicle – especially if you drive a compact car. The sound quality is amazing, and the overall design is top-notch. 

This powerful amp can deliver up to 600 watts RMS, making it perfect for blasting your favorite tunes. With its compact design, it’s easy to install too. 

This powerhouse of an amp is designed to deliver exceptional sound quality, while its compact size ensures it can fit almost anywhere in your vehicle.

The S-A60M features Alpine’s exclusive Enhanced Shutdown Performance technology, which prevents the amp from shutting down completely if it overheats from playing at its limits. 

This means you can keep the music going even when the temperature starts to rise. In addition, this amp is also equipped with a high-speed cooling fan to help keep it running at peak performance.

This amp has a low-pass filter and adjustable bass boost, so you can fine-tune the sound to your liking. Plus, the preamp- and speaker-level inputs make it easy to install in just about any car. 

With its hassle-free installation and easy operation, this amp is a great way to get the most out of your car stereo. The speaker-level inputs make it easy to connect to your existing stereo, and the built-in turn-on sensing eliminates the need for a separate turn-on wire. 

The optional wired remote lets you control bass level from the driver’s seat, so you can always have the perfect sound.


  • Compact design makes it easy to install
  • 600 watts RMS of power for big bass sound
  • Preamp- and speaker-level inputs make it versatile
  • Optional wired remote lets you control bass level from the driver’s seat
  • Alpine’s exclusive Enhanced Shutdown Performance technology prevents amp from shutting down if it overheats
  • High-speed cooling fan keeps amp running at peak performance


  • Some users have reported issues with the cooling fan being noisy
  • Not everyone will need the features offered by the wired remote control

Skar Audio RP-1200.1D Monoblock Class D Subwoofer Amplifier

Skar Audio RP-1200.1D Monoblock Class D Subwoofer Amplifier

The Skar Audio RP-1200.1D Monoblock Subwoofer Amplifier is one of the most powerful and reliable amplifiers on the market. It is designed to provide superior power and reliability compared to other amplifiers in its class. 

The RP-1200.1D delivers clean, accurate sound with minimal distortion. It is also very efficient, meaning it doesn’t use a lot of power while still delivering superior sound quality. 

This Subwoofer Amplifier is 1-ohm stable and packs a serious punch, with a conservative rating of 1,200 watts RMS power at a 1-ohm load. But it doesn’t stop there – this amp is capable of reaching beyond 1,600 watts at max power output, making it perfect for powering a pair of 600 watt rms subwoofers or a single 1,200 watt rms subwoofer. And with its high speed MOSFET power supply and advanced PCB board layout, you can rest assured

With 1,200 watts of power on tap, this amp is ready to rock your world.

Surprisingly compact for its power output, the RP-1200.1D is built to deliver. 

The class D MOSFET design means that it’s efficient and powerful, while the 4-gauge power and ground terminals ensure maximum current flow for even more power and efficiency.

This model Class D amplifier offers 1200 watts of peak power and is equipped with a MOSFET power supply for enhanced sound quality. With its compact size, this amplifier is able to produce high-quality sound without taking up too much space. 

Additionally, it features 4-way protection circuitry and comes with a remote subwoofer level control (bass knob) for easy control over the bass from the front of the vehicle. 


  • Incredibly powerful and efficient
  • Great sound quality
  • Compact size
  • 4-way protection circuitry
  • Remote subwoofer level control


  • Not the cheapest option on the market


Is a Class D amplifier good for a subwoofer?

Class D amplifiers are incredibly efficient, which means they generate very little heat. This makes them ideal for use in small spaces, such as in a car. Class D amplifiers also have a much higher power-to-weight ratio than other types of amplifiers, so they can provide more power without being too bulky.

Is a monoblock amp good for subs?

A monoblock amp is a great choice for powering a subwoofer. Monoblock amps are designed specifically for lows, so they tend to have features that other amplifiers don’t, like low-pass filters and bass boost. Plus, since they’re only powering one speaker, they can put out more power than a regular amplifier. So if you’re looking for the best possible sound from your subwoofer, a monoblock amp is the way to go.

What is the best sounding Class D amplifier?

The best sounding Class D amplifier is the one that provides the cleanest and most powerful sound. It should also be able to produce high-quality music at all volume levels. There are many different brands and models of Class D amplifiers on the market, so it is important to do your research before choosing one

What class amp is best for subs?

The Pioneer GM-D9701 is a great amp for subs. It has plenty of power and delivers clean sound with excellent bass response. It’s also very affordable, making it a great choice for budget-minded shoppers.

What is a Class D monoblock?

A Class D monoblock amplifier is a type of amplifier that uses a switching power supply to generate its output. This type of amplifier is usually more efficient than other types of amplifiers, and thus produces less heat. Class D monoblock amplifiers are also typically smaller and lighter than other types of amplifiers.

Do Class D amplifiers sound good?

This is a difficult question to answer as it really depends on the specific amplifier in question and what your personal preferences are. Some people feel that Class D amplifiers offer a more accurate sound reproduction while others find them to be too clinical sounding. Ultimately, it really comes down to personal preference and you will have to experiment with different amplifiers to see which one sounds best to you.

What is wrong with Class D amplifiers?

Class D amplifiers are usually more efficient than Class AB amplifiers, but they can suffer from a few issues. One is that they can produce a high-pitched noise called “chirping.” This can be caused by the amplifier switching on and off too quickly. Class D amplifiers can also produce distortion at high volumes. Finally, Class D amplifiers generate a lot of heat, so they need to be well-ventilated.

Is Class D amp better than class AB?

Class D amplifiers are more efficient than class AB amplifiers, meaning they use less power and generate less heat. They are also typically smaller in size. Class D amplifiers offer superior sound quality to class AB amplifiers, due to their lower distortion levels.

Why are class D amps so efficient?

The main reason that class D amplifiers are so efficient is that they use a switching power supply. This means that the power transistors are only turned on when they need to be, which reduces wasted energy. Class D amplifiers also tend to run cooler than other types of amplifiers, due to their high efficiency.

Should amps have more watts than subs?

No, your amplifier should not have more watts than your subs. In fact, it is recommended that your amplifier has slightly less power than your subwoofers. This will prevent your amplifier from overworking and possibly damaging your subwoofers.

How do I match my amp to my sub?

When matching an amplifier to a subwoofer, it is important to consider the RMS power rating of the subwoofer and compare it to the RMS power rating of the amplifier. It is generally recommended that the amplifier should be able to deliver at least twice the RMS power of the subwoofer.

Why do monoblock amps have 2 channels?

Monoblock amplifiers have two channels because they are designed to power a subwoofer and a separate set of speakers. Most monoblock amps have one channel dedicated to the subwoofer, while the other channel is used to power the speakers. This gives the amplifier more flexibility in terms of how much power is sent to each component, and it also allows the amplifier to produce cleaner sound overall.

What is A Class D subwoofer?

A Class D subwoofer is an amplifier that is designed specifically for subwoofers. Class D amplifiers are more efficient than other types of amplifiers, and they produce less heat. This makes them ideal for use in car audio systems, where space is often limited. Class D amplifiers also tend to have higher power output than other types of amplifiers, making them perfect for powering subwoofers.

Can Class D amps be bridged?

Yes, Class D amplifiers can be bridged. However, it is important to check the specs of the amplifier to see if it is bridgeable. Some Class D amplifiers are not meant to be bridged and may be damaged if they are.

Why is a Class-D amplifier called a switching amplifier?

A class-D amplifier is a switching amplifier because it uses transistors that are switched on and off very rapidly. The transistors are operated as switches, and they switch the current on and off to produce the amplified signal. The transistors are turned on and off so rapidly that they appear to be always on, and this enables the amplifier to produce a very efficient output.

Do Class D amps use less power?

Yes, Class D amplifiers are more efficient than Class AB amplifiers, and as a result, they use less power. This is one of the main reasons why Class D amplifiers are becoming increasingly popular in car audio applications.

How many amps does a Class D amplifier use?

Class D amplifiers typically use between 1 and 5 amps, with the majority using between 2 and 3 amps. Some very high-end models may use more, but this is relatively rare. Class D amplifiers are also much more efficient than other types of amplifiers, so they tend to generate less heat. This means that they can usually be used without the need for a separate cooling system.

What’s the difference between a monoblock amp and a regular amp?

Amonoblock amp is a type of amplifier that is designed to power a single channel of audio. This makes it ideal for powering subwoofers, as they typically require more power than other types of speakers. Regular amps, on the other hand, are typically designed to power multiple channels of audio, making them better suited for powering full-range speakers.

How many ohms is a Class D amplifier?

Class D amplifiers typically have an output impedance of around 50 ohms. However, some high-end models may have an output impedance of up to 100 ohms.

How many ohms is a monoblock amp?

A monoblock amp typically has an impedance of 4 ohms. However, this can vary depending on the specific amp. Always check the manufacturer’s specifications to be sure.

What does adding a capacitor to a speaker do?

Adding a capacitor to a speaker will increase the overall capacitance of the speaker. This will lead to increased bass response and improved sound quality. The capacitor will also help to protect the speaker from damage caused by excessive power.

What class amp is best for mids and highs?

There is no definitive answer to this question as it depends on a number of factors, such as the type of music you are playing, the acoustics of the room, and your personal preference. That said, many people find that class A amplifiers tend to produce warmer, more natural sounding mids and highs, while class D amplifiers tend to be more accurate and detailed. Ultimately, the best amp for mids and highs is the one that sounds best to you.

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