- Pre-order
- Brand: Fosi Audio
- Model : M04
- PID : 32312
Features
Fosi Audio M04 Subwoofer Power Amplifier
The Fosi Audio M04 Subwoofer Power Amplifier is a compact Class D mono power amplifier designed primarily for passive subwoofers and dedicated low-frequency amplification. With up to 100W output at 3Ω, RCA input, 2Ω–8Ω impedance support, and a dedicated 20Hz–200Hz bass range, it is suitable for home audio, home theater, and DIY audio projects. Its compact 103 × 57 × 43mm body also makes it practical for space-conscious installations.
The Fosi Audio M04 Subwoofer Power Amplifier is a compact mono amplifier built around Class D amplification technology and a TPA3116 chip. Its primary purpose is to drive a compatible passive subwoofer, allowing users to add dedicated bass amplification to an existing audio system.
The M04 features a SUB/PBTL operating function, giving users flexibility for different audio applications. In subwoofer mode, it is designed for low-frequency amplification, while the alternative configuration allows it to operate as a full-frequency mono amplifier for suitable speaker applications.
Its RCA input provides a straightforward wired connection to compatible audio sources, preamps, DACs, and other audio equipment. Weighing only 175g, the amplifier is easy to integrate into compact home audio systems, DIY builds, and custom installations.
Key Features & Benefits
Compact Class D Amplifier
The M04 uses Class D amplification technology in a small chassis. This makes it a practical choice for users who want dedicated amplification without adding a large conventional amplifier to their audio setup.
Up to 100W Output
The amplifier provides up to 100W maximum output at 3Ω. This makes it suitable for powering compatible passive subwoofers and certain passive speaker applications.
SUB/PBTL Operating Function
The SUB/PBTL configuration gives the M04 additional flexibility. Users can configure it for subwoofer applications or use it as a full-frequency mono amplifier depending on their audio system.
20Hz–200Hz Bass Frequency Range
The dedicated bass frequency range extends from 20Hz to 200Hz. This makes the M04 suitable for applications where the amplifier is being used primarily for low-frequency reproduction.
RCA Audio Input
The RCA input provides a familiar wired connection for compatible audio equipment. It can be integrated with suitable preamps, DACs, and other RCA-equipped audio sources.
High Signal-to-Noise Ratio
The M04 is specified with an SNR of ≥102dB. This supports a clean amplification stage when the amplifier is operated within its specified conditions.
Low THD+N
The specified THD+N is ≤0.02% at 1kHz and 1W, indicating low measured distortion under the stated test condition.
What Can You Do With This Product?
Add Amplification to a Passive Subwoofer
The M04 can be used to power a compatible passive subwoofer, allowing you to add a dedicated bass amplification stage to an existing audio system.
Build a DIY Subwoofer System
DIY audio enthusiasts can use the M04 as part of a custom passive-subwoofer project. Its compact dimensions make it useful for installations where available space is limited.
Use It in a Home Theater Setup
A compatible passive subwoofer can be connected to the M04 to create a dedicated amplification path for low-frequency content in a home theater system.
Create Compact Audio Projects
The M04 can also be considered for custom mono speaker projects where a compact Class D amplifier is required.
Who Should Buy This Product?
- Home Theater Users: Suitable for users who already have a compatible passive subwoofer and need a dedicated amplifier.
- DIY Audio Enthusiasts: Useful for custom speaker and subwoofer projects where compact amplification is required.
- Music Listeners: Suitable for users who want a separate amplification stage for compatible low-frequency speakers.
- Space-Conscious Users: Its 103 × 57 × 43mm dimensions and 175g weight make it convenient for compact audio installations.
What Makes This Product Worth Considering?
The Fosi Audio M04 combines dedicated mono amplification with a compact form factor. Instead of using a large multi-channel amplifier when only a dedicated subwoofer amplification stage is required, users can integrate a small amplifier into their existing system.
Its 100W maximum output at 3Ω, 2Ω–8Ω impedance support, RCA connectivity, Class D design, and SUB/PBTL configuration make it flexible for different compatible audio applications.
For DIY users, its small footprint is another practical advantage when designing compact audio systems.
Product vs Similar Options
The Fosi Audio M04 is best suited to buyers who specifically need a compact mono amplifier for a passive subwoofer or DIY audio project.
A conventional stereo amplifier may be a better option for users who need to power a pair of left and right speakers. Users who want a complete powered subwoofer may instead prefer a solution that combines the amplifier, enclosure, and subwoofer driver.
For desktop users looking for DAC and headphone amplification rather than dedicated subwoofer amplification, The Fosi Audio Q4 Desktop DAC Headphone Amplifier is designed for a different audio application.
Why Choose from Multimedia Kingdom?
Multimedia Kingdom offers the Fosi Audio M04 for customers in Bangladesh through its online store and retail channels. Customers can check the product page for current availability, purchasing information, and available support options.
Product availability may change, so buyers should confirm the current stock status before placing an order.
FAQs
Is the Fosi Audio M04 a subwoofer amplifier?
Yes. The Fosi Audio M04 is a compact Class D mono amplifier primarily designed for passive subwoofer applications.
How much power does the Fosi Audio M04 provide?
The M04 has a maximum specified output of 100W at 3Ω.
What type of input does the M04 use?
The amplifier uses an RCA audio input.
What impedance does the Fosi Audio M04 support?
The specified supported impedance range is 2Ω–8Ω.
Can I use the M04 with a passive subwoofer?
Yes. The M04 is designed to provide amplification for compatible passive subwoofers.
Can the M04 be used as a full-frequency amplifier?
Yes. Its SUB/PBTL operating configuration allows it to be used as a full-frequency mono amplifier for suitable passive speaker applications.
Does the Fosi Audio M04 include a subwoofer?
No. The M04 is a power amplifier only. A compatible passive subwoofer or speaker is required.
Is the Fosi Audio M04 suitable for DIY audio projects?
Yes. Its compact size, mono design, RCA input, and flexible operating configuration make it suitable for compatible DIY audio projects.
Don't Miss to Connect with Multimedia Kingdom
The Fosi Audio M04 Subwoofer Power Amplifier is a practical choice for users who need a compact mono amplifier to power a compatible passive subwoofer or build a custom audio system.
Its Class D architecture, up to 100W output at 3Ω, 2Ω–8Ω impedance support, RCA input, SUB/PBTL functionality, and compact 103 × 57 × 43mm design make it suitable for home audio, home theater, and DIY applications.
Before purchasing, the most important step is to confirm compatibility between the M04, your passive subwoofer or speaker, audio source, and power supply. Get also Relevant Categories Products
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