| Brand | Fosi Audio |
|---|---|
| Manufacturer | Fosi Audio |
| Place of Business | ShenZhen city, Guangdong province 518000,CN |
| Model | M04 |
| Part Number | M04 |
| Processor Brand | Texas Instruments |
| Special features | Great Sound Quality, Small Amp for Subwoofer; |
| Number of Items | 1 |
| Color Screen | No |
| Speakers maximum output power | 100 Watts |
| Speaker Amplification Type | Passive |
| Output Wattage | 100 Watts |
| Voltage | 12 Volts (DC) |
| Wattage | 100 watts |
| Power source type | Ac 110v - 240v |
| Batteries included | No |
| Batteries Required | No |
| Mounting type | Freestanding |
| Includes rechargable battery | No |
| Manufacturer | Fosi Audio |
| Item model number | M04 |
| Product Dimensions | 13.21 x 8.89 x 3.56 cm; 450 g |
| ASIN | B07942M4MC |
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Fosi Audio M04 Subwoofer Amplifier for Home Theater Mono Channel Digital Class D Integrated Power Amp for Passive Speakers Subwoofer Rated 100W MAX
Purchase options and add-ons
| Item dimensions L x W x H | 13.2 x 8.9 x 3.6 Centimetres |
| Voltage | 12 Volts (DC) |
| Manufacturer | Fosi Audio |
| Maximum supply voltage | 24 Volts |
| Minimum supply voltage | 1E+1 Volts (DC) |
| Mounting type | Freestanding |
| Brand | Fosi Audio |
| Number of channels | 1 |
| Output power | 1E+2 Watts |
| Package type | Standard Box |
About this item
- High-Performance Mono Amplifier:The Fosi Audio M04 is a mono amplifier designed for driving passive subwoofers or speakers. It features the Texas Instruments TPA3116 chip and NE5532 op-amp, providing an output power of 100 watts for a 2-ohm subwoofer or speaker.
- Enhanced Bass Response:The M04 SUB amp is designed to improve the bass response of passive subwoofers. It features a selector switch that allows the user to switch between subwoofer bass amplifier and full-frequency mono amplifier modes.
- Compact and Robust Design:This mini amp has a small and robust design with a built-in low pass filter for subwoofers and a sub frequency control, making it practical and powerful. It uses highly efficient Class D technology that remains cool under demanding loads and doesn't take up much space.
- Superior Sound Quality:The home subwoofer amplifier can produce a deep, crisp, and clean low-frequency sound effect, making it an excellent addition to dedicated home audio receivers & amplifiers. It has been designed to enhance the sound and performance of your audio system at an affordable price.
- Complete Package:What You Get: M04 subwoofer amp x1, 19V/4.74A power supply x1, user manual x1.
Frequently bought together

Product information
Technical Details
Additional Information
| Date First Available | Feb. 6 2018 |
|---|---|
| Customer Reviews |
4.5 out of 5 stars |
| Âé¶¹Çø Rank |
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| Is discontinued by manufacturer | No |
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This product has sustainability features recognized by trusted certifications.Carbon emissions from the lifecycle of this product were measured, reduced and offset.As certified by
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Amplifying Your Voice, Shaping Our Innovation
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Guided by our mission of "Redefining HiFi with Unmatched Value", Fosi Audio continues to fuel its passion for the Hifi industry, ramp up R&D efforts, and co-create new HiFi equipment with users. We pledge to bring more amazing Hifi gear with high value for the price, innovative design, cutting-edge technology, and premium quality, to audiophiles worldwide.
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Product Description
Mini Subwoofer Amplifier Full-Frequency Mono Stereo Amp
Subwoofer Amplifier for Home Theater
Power Adapter: 19V/4.74A DC Input Range: 12V-24V
Terminating Impedance: 2 Ohm - 8 Ohm Bass Frequency Range: 20-200Hz
MAX Power Output: 100Watt @4Ohm
Full Frequency Response Range: 20Hz-20KHz(¡À 3db)
Input Sensitivity: ¡Ü 0.2mV SNR ¡Ý 106dB THD ¡Ü0.03%
Mode Switching
Switch to PBTL, it's a Full-Frequency Mono amp for driving passive speakers. Switch to SUB, it's a subwoofer amplifier for diving passive subwoofers.
DIY Your Audio System
This amplifier gives you the power and versatility you need to create a professional sound system. Great amp to drift most home bookshelf speakers or subwoofers.
Fosi Audio Subwoofer Amp
100W | MAX Power Output | 220W |
RCA | Input | Bluetooth + RCA |
¡Ü 0.02% | THD | ¡Ü 0.05% |
¡Ý 102dB | SNR | ¡Ý 102dB |
Bluetooth | |
100W | MAX Power Output | 200W |
RCA | Input | RCA |
¡Ü 0.02% | THD | ¡Ü0.03% |
¡Ý 102dB | SNR | ¡Ý106»åµþ |
Bluetooth |
100W | MAX Power Output | 220W |
RCA | Input | RCA |
¡Ü 0.02% | THD | ¡Ü 0.04% |
¡Ý 102dB | SNR | ¡Ý 98dB |
Bluetooth |
100W | MAX Power Output | 165°Â¡Á2+350°Â |
RCA | Input | Bluetooth + RCA |
¡Ü 0.02% | THD | ¡Ü 0.03% |
¡Ý 102dB | SNR | ¡Ý 105dB |
Bluetooth | |



