8 Best Sub Amplifiers

Hey there! If you’re in the market for a subwoofer power amplifier for your home theater, you’ve come to the right place. Today, we’ll be comparing and reviewing a range of products to help you make an informed decision. Whether you’re a seasoned audiophile or just someone who wants to enhance their movie-watching experience, these subwoofer amplifiers offer excellent sound quality and versatility.

Subwoofer power amplifiers have been around for quite some time, catering to those who crave rich, deep bass in their audio setup. They are designed to boost the low-frequency sounds and provide a more immersive audio experience. The benefits of owning a subwoofer power amplifier are numerous. Firstly, they add that extra dimension to your home theater system, making explosions and impact in movies more realistic. Additionally, these amplifiers can enhance the bass response of your music, making it more enjoyable to listen to. Whether you’re watching a movie, playing video games, or simply enjoying your favorite tunes, a subwoofer power amplifier can take your audio experience to the next level.

Now, let’s take a closer look at some of the top subwoofer power amplifier models available in the market. From the Nobsound G2 Subwoofer Power Amplifier with its 100W output to the Fosi Audio TP-02 TDA7498E Subwoofer Amplifier with its impressive 220Watt power, we’ll delve into their features, performance, and suitability for different setups. So, sit back, relax, and get ready to crank up the bass with these fantastic subwoofer power amplifiers.

Nobsound G2 Subwoofer Power Amplifier Mini Mono Sub Amp 100W Bridge for Home Theater

The Nobsound G2 Subwoofer Power Amplifier is designed to be used as either a sub amp or a mono channel amp. It features a mode switcher that allows users to easily switch between SUB and PBTL modes. This versatile amp can be used in various applications, such as powering passive subwoofers or driving a single channel. It can also be used in a PBLT/BTL Bridge amp setup, where two G2 amps can be used separately to drive the left and right channels.

We like the Nobsound G2 Subwoofer Power Amplifier because of its flexibility and power. It allows users to customize the output level with its gain setting, offering four different levels of output level setting (20/26/32/36 dB). This ensures that users can tailor the sound to their preferences while maintaining the purity of the audio. Additionally, the amp features a bass cutoff frequency control knob, giving users control over the low-frequency response.

The Nobsound G2 Subwoofer Power Amplifier is designed to provide high-power performance and minimize interference between channels. With its TI TPA3116 and NE5532 op-amp, it can deliver 100W of power, making it suitable for driving most home subwoofers and mono speakers. The optimized circuit design ensures that there is no background noise, allowing for a clean audio experience. The amp also includes built-in speaker protection and a low-pass bass filter to enhance the overall sound quality.

The Nobsound G2 Subwoofer Power Amplifier is manufactured with high-quality components, including a 19V 4.74A power supply. The amp is built to last and impresses with its solid construction. It also comes with a prompt and courteous customer service, ensuring that any questions or concerns can be addressed promptly.

• Versatile with the ability to be used as a sub amp or a mono channel amp

• Customizable output levels with gain setting

• Bass cutoff frequency control knob for precise low-frequency response

• High power output suitable for most home subwoofers and mono speakers

• Clean audio experience with no background noise

• Built-in speaker protection and low-pass bass filter

• The mode switcher can be confusing to operate for some users

• Some users may find the overall power output insufficient for their needs

With its versatility, power, and high-quality construction, the Nobsound G2 Subwoofer Power Amplifier is a reliable choice for those looking to enhance their home theater or audio setup.

Fosi Audio M03 200W TPA3255 Subwoofer Amplifier

The Fosi Audio M03 200 Watt TPA3255 Subwoofer Amplifier is designed to be used in home theater systems, specifically for driving passive speakers and powered subwoofers. It offers both full-frequency mono amp functionality and subwoofer amplifier capabilities, allowing users to switch between the two modes depending on their audio needs.

We are impressed with the advanced technology incorporated into the Fosi Audio M03 Subwoofer Amplifier. The use of the Texas Instruments TPA3255D2 chip, combined with integrated feedback design and high-speed gate driver error correction, ensures ultra-low distortion across the audio band and superior audio quality. We also appreciate the high power output, capable of delivering up to 200 Watts of power, ensuring a robust and immersive audio experience.

The Fosi Audio M03 Subwoofer Amplifier serves two primary purposes: driving passive speakers and powered subwoofers. Its flexibility is enhanced by the ability to switch between full-frequency mono amp mode and subwoofer amplifier mode, allowing users to customize their audio setup. The built-in low pass filter and SUB frequency control make it easy to fine-tune the sound reproduction for subwoofers within the frequency range of 20Hz to 300Hz.

The overall quality of the Fosi Audio M03 Subwoofer Amplifier is exceptional. It is built with a solid construction and sleek design, making it a visually appealing addition to any home theater system. The clean sound quality ensures accurate audio reproduction, and the efficient power output capability allows for dynamic and impactful sound performance.

• High-quality audio performance with ultra-low distortion

• Versatile functionality for both full-frequency and subwoofer amplification

• High power output of up to 200 Watts RMS

• Built-in low pass filter and SUB frequency control for subwoofer optimization

• Durable construction and visually appealing design

• The included power supply may not provide enough power for maximum output, requiring users to purchase a more powerful power supply separately

The Fosi Audio M03 200 Watt TPA3255 Subwoofer Amplifier offers excellent audio quality, versatile functionality, and a sleek design. Whether used for driving passive speakers or powered subwoofers, this amplifier delivers exceptional performance and will be a valuable addition to any home theater system.

Nobsound Mini Subwoofer Amplifier 100W SUB Power Amp

The Nobsound NS-03G Subwoofer Amplifier 100W Mini SUB Power Amp is primarily used to power passive subwoofers. It is not compatible with active or powered subwoofers, as well as regular speakers.

The Nobsound NS-03G Subwoofer Amplifier stands out to us for several reasons. Firstly, it is equipped with the TPA3116D2 chip, which enables it to deliver a powerful 100W output. This ensures punchy and impactful bass, enhancing the overall audio experience.

Additionally, we appreciate its super mini size and solid shell. The compact design allows for easy placement on a desktop or next to a subwoofer without taking up too much space. The sturdy construction ensures durability and longevity, making it a reliable choice.

Furthermore, the Nobsound NS-03G features a smooth volume control knob, which allows for easy adjustment of the bass levels. This convenient feature ensures that users can fine-tune the audio to their liking without any hassle.

The purpose of the Nobsound NS-03G Subwoofer Amplifier is to provide an efficient and powerful solution for powering passive subwoofers. It is designed to enhance the bass output and improve the overall sound quality of audio systems.

Key features of this amplifier include its compatibility with various sound sources, such as phones, CD players, and TVs, thanks to its 3.5mm AUX input. This versatility allows users to easily connect different devices and enjoy enhanced audio.

It is important to note that this product does not include a power supply. Users have the option to choose the high-quality 19V power supply recommended by the manufacturer or purchase a power supply of their choice, ensuring a good quality power source for optimal performance.

The Nobsound NS-03G Subwoofer Amplifier demonstrates a high level of quality in its design and performance. Its use of the TPA3116D2 chip, sturdy construction, and convenient volume control knob all contribute to an excellent user experience.

Some pros of the Nobsound NS-03G Subwoofer Amplifier are its compact size, powerful 100W output, and compatibility with various sound sources. However, a potential con to consider is the need to purchase a separate power supply, which may incur additional costs for users.

Fosi Audio M04 Subwoofer Amplifier (100W MAX) for Home Theater System

The Fosi Audio M04 Subwoofer Amplifier is specifically designed for driving passive subwoofers or speakers in a home theater setting. It can significantly enhance the bass response and overall sound performance of your audio system.

We like the Fosi Audio M04 Subwoofer Amplifier because of its exceptional features and performance. It utilizes the Texas Instruments TPA3116 chip and NE5532 op-amp, providing a powerful output power of 100 watts for a 4-ohm subwoofer or speaker. This allows for deep, crisp, and clean low-frequency sound effects, enhancing the overall audio experience.

The purpose of the Fosi Audio M04 Subwoofer Amplifier is to improve the bass response of passive subwoofers, providing a more immersive and impactful audio experience. It features a selector switch, which allows users to switch between subwoofer bass amplifier and full-frequency mono amplifier modes, catering to different audio preferences.

Key features of the Fosi Audio M04 Subwoofer Amplifier include its compact and robust design, built-in low pass filter for subwoofers, and sub frequency control. It utilizes highly efficient Class D technology, ensuring cool operation even under demanding loads. Additionally, its small size makes it space-saving and practical for various home theater setups.

The Fosi Audio M04 Subwoofer Amplifier boasts excellent overall quality. With its high-quality components and advanced technology, it provides exceptional sound performance and durability. The integrated power amp delivers powerful and clear bass, enhancing the overall audio experience of any home theater system.

Pros:

• Impressive 100 watts output power for a 4-ohm subwoofer or speaker
• Versatile switch for subwoofer bass amplifier and full-frequency mono amplifier modes
• Compact and robust design with built-in low pass filter and sub frequency control
• Utilizes highly efficient Class D technology, remaining cool under demanding loads
• Enhances the sound and performance of your audio system at an affordable price

Cons:

• Limited to passive subwoofers and speakers, not compatible with active or powered options

Nobsound G2 PRO Subwoofer Power Amplifier

The Nobsound G2 PRO Hi-Fi 300W Subwoofer Power Amplifier is designed for both professional and home use. It is perfect for enthusiasts and audiophiles who want to enhance their audio experience with a powerful subwoofer.

We love the versatility of the Nobsound G2 PRO Hi-Fi Subwoofer Power Amplifier. Its PBTL/SUB switch allows users to easily switch between using it as a full frequency amplifier or a subwoofer amplifier. The SUB output is specifically designed for active subwoofers, making it compatible with a wide range of speakers. Additionally, the ability to drive left and right channels independently reduces the risk of interference.

The Nobsound G2 PRO Hi-Fi 300W Subwoofer Power Amplifier is equipped with a TPA3255D2 amp chip and a 32V/5A power supply, delivering a maximum output power of 300W. This makes it capable of driving both passive speakers and subwoofers up to 320W. Whether you are using it with outdoor speakers, bookshelf speakers, computer speakers, or floor standing speakers, the G2 PRO provides excellent sound quality.

The amplifier features a gain switch that allows for two levels of output level setting (32/36 dB) and a SUB frequency adjustment ranging from 40Hz to 300Hz. It also includes built-in speaker protection circuitry and a low-pass filter, ensuring a clean audio output even at high power levels. With the ability to output both the SUB signal and the amplifier signal simultaneously, the G2 PRO creates a truly immersive Hi-Fi listening experience.

The Nobsound G2 PRO Hi-Fi 300W Subwoofer Power Amplifier boasts exceptional overall quality. Its compact design, solid aluminum chassis, and exquisite appearance make it an attractive addition to any audio setup. The amplifier’s advanced features, such as the gain switch and SUB frequency adjustment, offer users precise control over their audio output. Additionally, the built-in speaker protection circuitry ensures maximum durability and longevity.

• Pros:

  • Versatile PBTL/SUB switch for easy configuration
  • High power output of 300W
  • Compatible with various speakers and subwoofers
  • Gain switch and SUB frequency adjustment for precise control
  • Built-in speaker protection circuitry for added durability
  • Exquisite design with a solid aluminum chassis

• Cons:

  • May be too powerful for smaller setups
  • May require additional cables for certain speaker configurations

Fosi Audio Mini Subwoofer Amplifier 220W

The Fosi Audio TP-02 TDA7498E Subwoofer Amplifier is primarily used to power passive and subwoofers in home theater systems or whole-house audio setups.

The Fosi Audio TP-02 TDA7498E Subwoofer Amplifier is a compact yet powerful amp that delivers immersive and deep bass. Its high efficiency allows for up to 220W peak power, providing crisp and clean low-frequency sound effects. This amplifier offers a significant upgrade to your audio system, redefining the bass experience.

The TP-02 Subwoofer Amplifier is equipped with the STMicroelectronics TDA7498E chip, a dual BTL class-D audio amplifier designed for home speaker systems applications. This chip ensures high-quality sound reproduction while maintaining a compact size. The amplifier also features smart protection, thermal overload protection, and standby and mute features for added convenience and safety.

One of the key features of the TP-02 amplifier is its compatibility with various home theater audio systems. It can be easily integrated with both older and newer source equipment due to its RCA output compatibility. This versatility makes it a suitable choice for a wide range of audio setups.

The Fosi Audio TP-02 TDA7498E Subwoofer Amplifier is built with excellent craftsmanship and attention to detail. Its compact design ensures easy installation and integration into any audio system. The use of high-quality materials and the inclusion of smart protection features contribute to its overall durability and longevity.

Pros:

• Compact size with powerful performance
• High efficiency for immersive and deep bass
• Compatible with various audio systems
• Smart protection features for added safety

Cons:

• Limited to subwoofer and passive speaker powering
• May require additional equipment for full home theater setup

The Fosi Audio TP-02 TDA7498E Subwoofer Amplifier is a top choice for those seeking enhanced bass performance in their home theater or whole-house audio systems. Its powerful performance, compact design, and compatibility with various audio setups make it a versatile and reliable amplifier. With its smart protection features and high-quality construction, the TP-02 is an ideal addition to any audio enthusiast’s setup.

Facmogu Bluetooth Power Amplifier

The Facmogu S-299 4.1CH Bluetooth Power Amplifier with Active Subwoofer Output is primarily used to enhance audio quality and provide a powerful bass experience. It is ideal for individuals who enjoy listening to music or watching movies with immersive sound.

We like the Facmogu S-299 amplifier because it offers a peak power output of 800W, allowing users to drive two pairs of high-capacity speakers and an active subwoofer. This enables an enhanced audio experience with clear and distortion-free sound.

The purpose of the Facmogu S-299 amplifier is to provide users with high-quality sound reproduction and deep bass. Key features of this product include:

1. Active Subwoofer Output: The amplifier is designed to work specifically with an active subwoofer, offering a robust bass output that enhances the overall audio experience.

2. Hi-Fi Sound Quality: With a high-capacity transformer and a harmonic distortion of less than or equal to 0.04%, the S-299 amplifier delivers crystal-clear and sharp music, perfect for listening pleasure.

3. Multiple Connectivity Options: The amplifier supports Bluetooth 5.0, allowing users to connect their music streaming devices wirelessly. It also features a 3.5mm AUX cable, USB port, and SD/TF card port, giving users various options for connecting their audio sources.

4. Dual Volume Controls: The front panel of the amplifier features two independent volume control knobs, enabling users to adjust the volume of two groups of speakers separately. This is useful, for example, when having louder speakers near a pool area and softer speakers in an outdoor bar area.

5. Easy Operation: With bass and treble control knobs, users can customize their music output to suit their preferences. The bright digital LED display makes it easy to view the settings, and the remote control allows for convenient audio adjustments from a distance.

The Facmogu S-299 amplifier is known for its high-quality sound output and reliable performance. Users can expect clear sound without distortion, making it an excellent addition to any audio setup.

Pros:

• Peak power output of 800W for powerful audio experiences
• Hi-Fi sound quality with low harmonic distortion
• Multiple connectivity options including Bluetooth, AUX cable, USB, and SD/TF card port
• Dual volume controls for independent speaker adjustment
• Easy operation with bass and treble control knobs and a remote control

Cons:

• Not compatible with passive subwoofers
• Not recommended for stereo gaming, primarily designed for music listening

The Facmogu S-299 4.1CH Bluetooth Power Amplifier with Active Subwoofer Output is a reliable and versatile option for individuals looking to enhance their audio setup with clear sound and deep bass capabilities.

Suacopzar S299 Max 800W Bluetooth Home Audio Amplifier

The Suacopzar S299 Max 800W Bluetooth Home Audio Amplifier is designed to enhance the audio experience in home entertainment systems. It is specifically aimed at powering subwoofers and delivering deep, rich bass sound.

This sub amplifier stands out for its impressive power output, delivering a total of 800W and providing an RMS of 40Wx4 in a 4.1 channel configuration. This ensures a powerful audio performance that can elevate any home audio system.

We particularly appreciate the Bluetooth connectivity feature, which allows users to stream their favorite music wirelessly from compatible devices such as smartphones and tablets. With this functionality, there is no need for cumbersome cables to connect the amplifier to the audio source.

Another standout feature of the Suacopzar S299 Max 800W is its versatile input options. It comes equipped with an AUX input, headphone jack, USB port, SD card slot, and TF card port. These multiple connectivity options make it easy to connect a wide range of devices and expand the audio playback capabilities.

The purpose of the Suacopzar S299 Max 800W Bluetooth Home Audio Amplifier is to provide a reliable and powerful amplification solution for subwoofers in home audio systems. Its key features include:

• Bluetooth connectivity for wireless audio streaming
• 4.1 channel configuration for surround sound experience
• Multiple input options including AUX, headphone jack, USB, SD, and TF card ports
• Remote control for convenient operation

This amplifier is designed to enhance the audio quality of speakers and subwoofers, delivering a heightened listening experience with deep bass extension and clear sound reproduction.

The Suacopzar S299 Max 800W Bluetooth Home Audio Amplifier demonstrates a high level of quality in both its build and performance. Its durable construction ensures longevity, while the powerful amplification capabilities cater to the needs of audio enthusiasts.

• Powerful 800W output for immersive sound

• Bluetooth connectivity for convenient wireless streaming

• Versatile input options for easy connectivity with various audio devices

• May not be suitable for larger home theater setups requiring higher power output

The Suacopzar S299 Max 800W Bluetooth Home Audio Amplifier is a reliable and feature-packed option for those seeking to enhance their home audio system’s bass performance. With its multiple connectivity options and powerful amplification, it offers great value for its price.

Comparison of Specifications

Product Name	Nobsound G2 Subwoofer Power Amplifier	Fosi Audio M03 Subwoofer Amplifier	Nobsound NS-03G Subwoofer Amplifier	Fosi Audio M04 Subwoofer Amplifier	Nobsound G2 PRO Hi-Fi Subwoofer Power Amplifier	Fosi Audio TP-02 TDA7498E Subwoofer Amplifier	Facmogu S-299 Bluetooth Power Amplifier
Power Output	100W	200W	100W	100W	300W	220W	800W
Amplifier Type	Mini Mono	Mini Mono	Mini Mono	Mono	Mono	Mini Sub Bass	4.1CH Bluetooth
Frequency Control	Bass cutoff frequency control knob	SUB frequency control	No	Sub frequency control	SUB frequency adjustment	Not specified	Not specified
Power Supply	19V 4.74A	32V/5A	No	19V/4.74A	32V/5A	Not specified	DC12V power adapter & remote control
Compatibility	Passive subwoofers	Passive and powered subwoofers	Passive subwoofer	Passive subwoofers	Passive and active subwoofers	Passive and subwoofers	Active subwoofer
Op-Amp	NE5532	Texas Instruments TPA3255D2 chip	TPA3116D2 chip	NE5532	Not specified	STMicroelectronics TDA7498E chip	Not specified
Input Options	3.5mm AUX	Not specified	3.5mm AUX	Not specified	Not specified	RCA output	Bluetooth, 3.5mm AUX, USB, SD/TF Card
Additional Features	Speaker protection circuit, low pass bass filter	Built-in low pass filter	Super mini size, solid shell	Built-in low pass filter	Built-in speaker protection circuit, low-pass filter	Smart protection, thermal overload protection	2 separate volume controls, digital LED display

The table above provides a comparison of the specifications for the eight products being reviewed. It covers key features such as power output, amplifier type, frequency control, power supply, compatibility, op-amp, input options, and additional features. This allows readers to easily compare and choose the product that aligns with their specific needs and preferences.

Conclusion

After reviewing all eight products, it is clear that there are some standout options for those looking to enhance their home theater experience with a high-quality subwoofer amplifier. Each product offers its own unique features and benefits, but there are also a few drawbacks to consider.

Nobsound G2 Subwoofer Power Amplifier Mini Mono SUB Amp 100W PBTL BTL Bridge Home Theater

This amplifier offers a compact design and good power output. However, some users have reported issues with reliability and durability.

Fosi Audio M03 200 Watt TPA3255 Subwoofer Amplifier Mini Mono Channel Audio Power Amp for Home Theater Full-Frequency and SUB Bass Switchable with 32V/5A Power Supply

The Fosi Audio M03 amplifier provides a high power output and switchable full-frequency and sub-bass settings. However, it may not be suitable for those on a tight budget.

Nobsound NS-03G Subwoofer Amplifier 100W Mini SUB Power Amp

With its compact size and high power output, the Nobsound NS-03G is a good option for smaller setups. However, some users have experienced issues with overheating.

Fosi Audio M04 Subwoofer Amplifier for Home Theater Mono Channel Digital Class D Integrated Power Amp for Passive Speakers Subwoofer Rated 100W MAX

The Fosi Audio M04 offers an integrated power amp and is compatible with passive speakers. However, it has a lower power output compared to other options.

Nobsound G2 PRO Hi-Fi 300W Subwoofer Power Amplifier Mono Channel Class D SUB Audio Amp

For those who require a high power output, the Nobsound G2 PRO is an excellent choice. However, it is larger in size and may not be suitable for smaller setups.

Fosi Audio TP-02 TDA7498E Subwoofer Amplifier Mini Sub Bass Digital Class D Integrated Subwoofer Amp 220Watt

The Fosi Audio TP-02 provides a good balance of power and size. However, some users have reported issues with the durability of the product.

Facmogu S-299 4.1CH Bluetooth Power Amplifier with Active Subwoofer Output Max 800W RMS 40Wx4 Subwoofer Amplifier Hi-Fi Integrated Mini Speaker Amp Audio Sub Bass Amp Remote Control & 12V Power Supply

The Facmogu S-299 offers Bluetooth connectivity and a high power output. However, some users have experienced difficulties with the remote control function.

Suacopzar S299 Max 800W Bluetooth Home Audio Amplifier, RMS 40Wx4 4.1CH Bluetooth Power Amplifier with Active Subwoofer, Sound Audio System w/AUX, Headphone Jack, USB, SD, TF Card port, Remote Control : Electronics

With its multiple connectivity options and high power output, the Suacopzar S299 is a versatile amplifier. However, some users have reported issues with the reliability of the product.

Recommendation

For those seeking a reliable and high-quality subwoofer amplifier, the Fosi Audio M03 200 Watt TPA3255 Subwoofer Amplifier stands out. With its switchable full-frequency and sub-bass settings and powerful output, it offers a well-rounded experience. While it may be slightly more expensive than some other options, the added features and performance make it worth the investment.

Overall, it is important for potential buyers to carefully consider their needs and budget before making a final decision.