Home Music & Audio Best Subwoofer Amplifiers [Buying Guide] in 2020

Best Subwoofer Amplifiers [Buying Guide] in 2020

by Jonathan Logtenberg
Rockville RWS12CA Slim 1200 Watt 12" Powered Car Subwoofer Enclosure + Wire Kit
Kenwood KAC-9106D 2000W Monoblock Class D Car Audio Power Amplifier
Hifonics ZRX1816.1D Zeus Mono Class-D Subwoofer Amplifier, 1800-Watt
Rockville RWS12CA
Kenwood KAC-9106D
Hifonics ZRX1816.1D
Rockville RWS12CA Slim 1200 Watt 12" Powered Car Subwoofer Enclosure + Wire Kit
Rockville RWS12CA
Kenwood KAC-9106D 2000W Monoblock Class D Car Audio Power Amplifier
Kenwood KAC-9106D
Hifonics ZRX1816.1D Zeus Mono Class-D Subwoofer Amplifier, 1800-Watt
Hifonics ZRX1816.1D

Are you looking for an amplifier to magnify the sound of your car stereo system? The subwoofer amplifier is here to the rescue. Subwoofer amplifiers have one task to upgrade the audio system of a car to produce crispy, clearer and undistorted sounds. They are designed to be able to transmit low-frequency sounds and other signals specific to the car subwoofers. Shopping for the right subwoofer amplifier can get tricky. For this reason, Surf n’ Buy has come up with this list to help make the shopping process easier. Below are the best subwoofer amplifiers to go for today.

Top 3 Subwoofer Amplifiers

1. Rockville RWS12CA Slim 1200 Watt 12“Powered Car Subwoofer

This subwoofer from the stables of Rockville is one of the most on-demand amplifiers to boost your car audio bass on the road. It comes with all the features that you could dream of in a subwoofer amplifier. This amplifier in all ramifications reflects Rockville’s goal to develop a smart and integrated solution for adding bass to any car’s stereo system. The RWS12CA is a heavy-duty subwoofer designed to have long-lasting usage. With a durable enclosure, the all system of the amplifier functions as a single unit with a quick response rate. The Rockville subwoofer is small and compact. However, do not let it fool you into thinking that its performance is the same with its size. Regardless of the size, this amplifier has a high-performance rate to upgrade the audio system of any vehicle.

It features a soft abrasion proof insulation jacket that allows 100% flexibility. With a 1200-watt peak power output, this amplifier can power the audio system of a car efficiently. Its slim design makes it perfect for tight spaces such as the back of a car, under the seat or car trunks. Combining all the features and innovative technologies with the tough MDF box enclosure of the Rockville to produce deep sounding bass, it does not become hard to see that this amplifier is one of the leading Monoblock amplifiers in the market today. Save space in your car for this groundbreaking device.


  • 1200 watts peak power output.
  • High-density laminated foam surround.
  • Black textured synthetic leather front panel.
  • 70oz. magnet motor structure.
  • High power strontium magnet with ultra-saturated high BL motor structure.
  • 2″ high-temperature aluminum voice coil.
  • Ultra-stiff composite pulp cone with Kevlar reinforcement.
  • Remote bass control.
  • Super slim and tough MDF box enclosure design.
  • Slim design that enables the Rockville amplifier to fit into any space.
  • 3D molded acrylic dust cap.
  • Vented core magnet motor structure.
  • Gold plated AGU heat resistant fuse holder.


  • Issues with the inline fuses.
  • The length slightly longer than most car back seats.


The Rockville subwoofer amplifier is the ideal solution for your vehicle’s audio system. We at Surf n’ Buy recommends this exceptional and unique car audio system amplifier to you.

2. Kenwood KAC-9106D 2000 Watts Mono Subwoofer Amplifier

The Kenwood KAC-9106D keeps up with the best mono subwoofer amplifiers in the market. Straight from the stables of Kenwood, the Kenwood KAC-9106D is a powerful subwoofer amplifier. Talk about power output the Kenwood KAC-9106D is up to the task. It is designed to get a huge power supply to a car’s audio system without heating it. It gets out 500 watts of power output at a minimum and a maximum of 2000 watts.

The bass boost control feature allows users to tune up and adjust the head-pounding bass to the level they desire. With this feature, you have the control of the bass of your audio system in your hands. One of the interesting things about the Kenwood KAC-9106D is MOFSET technology. This feature is in place to ensure that optimum power output is delivered to the audio system for sound quality upgrading. This amplifier is a Monoblock and is a class D amplifier. This means that sound is produced efficiently without distortion.

Near the top of this amplifier, there is a LED red triangle indicator that can be exploited to enhance the aesthetics of the car stereo system. There is an aluminum sink within the sturdy enclosure to guarantee the effective cooling of the amplifier during use. In addition, there is a signal-sensing feature that turns on to indicate an issue when the volume of the audio system is cranked up too high. This is built to establish more protective measures to keep the Kenwood KAC-9106D in a good working condition. Consequentially, this offers you great value for your money.

What makes this amplifier even more interesting is that notwithstanding all the features it is packed with, it affordable. This is an amplifier you want to install in your car space.


  • Compact design that runs efficiently.
  • MOFSET switching power supply technology that increases the efficiency of the Kenwood KAC-9106D amplifier.
  • Huge aluminum sinks that keep the Kenwood KAC-9106D cool to operate optimally even after long use.
  • 2000-watt peak power output at maximum and 500-watt power output at minimum.
  • A signal-sensing turn on a feature to detect any issue with the Kenwood KAC-9106D during use.
  • No distortion of sound.
  • Class D amplifier design.
  • Mono subwoofer amplifier.
  • Bass booster to fatten the sound production on the go.
  • Aluminum cover plates cover.


  • Little protection available.


The Kenwood KAC-9106D is an amplifier to consider if you are on a tight budget. The alloy of power output, MOFSET technology, affordable price, class D amplifier design, signal-sensing turn-on feature, cast aluminum sinks, and the compact design of this amplifier makes it a great asset to acquire at such an affordable price. Overall, this subwoofer amplifier is a device worth your money as it houses all the features an audiophile will want in a car amplifier at a decent price. This product’s quality leaves us with no choice at Surf n’ Buy but to recommend it to you.

3. Hifonics ZRX1816.1D Zeus Mono Class-D Subwoofer Amplifier, 1800-Watt

If you are serious about fine-tuning the audio system of your vehicle then the Hifonics ZRX1816.1D is an amplifier you should consider having. Hifonics manufactures top of the line amplifiers and this has earned them a cut on our list of best subwoofer amplifiers. The ZRX1816.1D is invented in a special design to power up low-frequency bass signals optimizing them to become louder and clearer.

The Hifonics Surface Mount Design is a special design feature that comes with this amplifier. For maximum heat dissipation, there is the aluminum heat sink. Considering that the heat sink is made of aluminum, it has the capacity to absorb and remove heat faster from the car amplifier to keep it functioning optimally. Improve the bass and sound quality of your car stereo system with the bass EQ booster. This feature allows audiophiles to adjust the sound frequencies to get the best out of their audio system.

The Hifonics amplifier has a built-in LED that signifies the operational status or problem of the device for protection. When the amplifier suffers a thermal overload or the speaker wire is short-circuited, the LED light comes on. Just like all class D amplifiers, the ZRX1816.1D comes with the MOSFET power supply technology.


  • Has maximum power output of 1800 watts to produce premium sound quality.
  • Mono channel operation.
  • A class D amplifier suggesting that sound produced is distortion-free.
  • A subsonic filter of frequency 10 Hz – 40 Hz at 24dB that cancels noises at the sound background.
  • Has Military-grade PCB construction.
  • Comes with the MOSFET power supply technology.
  • An aluminum heat sink that dissipates maximum heat effectively from the internal system of the amplifier.
  • Four-way protection circuitry.
  • Built-in LED indicator for protection.
  • Remote bass EQ booster control.
  • Subsonic filter.
  • Slim and compact design.


  • May not be compatible with every car chassis.


The Hifonics ZRX1816.1D is an amplifier that every audiophile that wants to upgrade and ramp up the bass level while on the go would want to have. It is even affordable to own. If you are a shoestring budget and in need of a car amplifier that has bass EQ booster, MOSFET power supply, subsonic filter, aluminum heat sink built-in LED indicator, topnotch design, and compare the shape, this subwoofer amplifier is good to go for. We at Surf N’ Buy have reviewed this product and deemed it fit for owning.

What are Subwoofer Amplifiers?

In most cars, the speakers are augmented with subwoofers. Subwoofers are in place to pick up low-frequency signals (bass) to reproduce them into a louder and clearer sound. Subwoofer amplifiers are then devices designed to magnify this low-frequency signals received by subwoofers making them clearer than it is without the amp.

The use of subwoofer amplifiers is the only true way to achieve great bass. The installation of the subwoofer amplifier is the first step to upgrading the audio system of a car. There are many subwoofer amplifiers in the market of different price ranges that you can acquire to incorporate into your car setup.

What to Consider When Purchasing Subwoofer Amplifiers

Subwoofer amplifiers are great devices for enhancing the stereo setup of a car. This is most especially when you have purchased the right subwoofer amplifier. There are so many subwoofer amplifiers in the market that it has become overwhelming to choose the appropriate one. Below are certain factors to consider when you are buying a subwoofer amplifier. Note that if you want to get an amplifier for your subwoofer to get clean and crisp audio quality, you have to stick to these tips.

Consider the Wattage

Amplifiers use electric signals to amplify that low-frequency sounds that subwoofers reproduce. The amount of electricity that an amplifier puts out is the wattage. Go for an amplifier that has a high power output because the higher the wattage the better the sound experience is.

Number of Channels

The number of channels that the subwoofer has played a key role in determining the sound quality produced by a car’s audio setup. If an amplifier does not have enough channels, the sound produced with not be clean and clear. Get a mono channel amplifier if you are using an amplifier for a subwoofer and go for up to 6-channel amp if it is multiple subwoofers.

Mode of Connection

Subwoofer amplifiers that are directly connected to subwoofer make the sound clean and clearer. Before you purchase a subwoofer amp, check the label to see if it has a direct connection.

Range of Frequency

Amplifiers come with different frequency ranges to pick up sound signals. The wider the range they can cover the better the sound produced. For example, an amplifier that has a range of 20-20,000 Hz will cover a full range. 60-4,000 Hz amplifier is ideal if you are on a shoestring budget.

Remote Controllable

The subwoofer amplifiers are normally out of range when driving. You might want to adjust the amplifier sound settings and it will become difficult without a remote control. Opt for an amplifier that has a remote control to enable you easily make use of your subwoofer amplifier.


Before you buy a subwoofer amp, weigh up your financial capability. It is best to go for an amp that is durable, easy to install and maintain if you are on a tight budget. This saves you cost in the long run and enables you to enjoy the full value of an amplifier.


Subwoofer amplifiers are important gadgets to enhance the audio system of a car for a theatrical sound experience. They are affordable and come with excellent features to offer users a great result. The Hifonics ZRX1816.1D, Kenwood KAC-9106D, and Rockville RWS12CA are examples of the best amplifiers to buy today. We hope that this guide we have provided you with will assist you to buy a subwoofer amplifier that will offer you a genuine value of your money.


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