Facmogu F900S 160W Mini Bluetooth 5.0 Power Amplifier, 2 Channel 80Wx2 Stereo Hi-Fi Digital Amp, Portable Wireless Audio Receiver Sound Speaker Amplifer, AUX/USB/Bluetooth Input & 12V Power Supply
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AI Verdict
This tiny, budget-friendly amp is perfect for powering passive desktop speakers, but the annoying voice prompts and underpowered 60W power supply keep it from being a true powerhouse.
The TPA3116 chip delivers clean audio for small desk setups. The included cables make it a plug-and-play solution right out of the box. Mandatory voice prompts and a weak 60W power supply severely limit its use for serious listening rooms.
If you actually need 160W of power, you must buy a separate 24V power adapter, or step up to an amp like the Fosi Audio BT20A.
Regret Score™
Low RiskLower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity
Issues discovered after purchase
Critically weak dimension
Amazon rating vs actual quality
Chance this product isn't for you
Pros
- Measures just 3 by 2.7 inches, easily tucking under a PC monitor without eating desk space
- Includes a complete cable kit out of the box: 12V power adapter, USB, 3.5mm AUX, and RCA to AUX
- TPA3116 chip drives 4-8 Ohm passive speakers loud enough for a medium-sized bedroom
- USB input acts as a plug-and-play sound card for PCs, bypassing the need for a separate DAC
Cons
- Loud, unchangeable voice prompts announce 'Bluetooth mode' every time you switch inputs
- The included 12V 5A power supply only provides 60W total, making the 160W advertised rating impossible without buying a beefier adapter
- Users report a high-pitched whining noise through the speakers when no audio is playing
- Incompatible with Amazon Echo devices and Bose smart speakers
Dimension Scores
The TPA3116 chip provides clear mids and highs, but an idle whining noise ruins quiet moments.
The included 12V 5A power supply starves the amp, capping it at 60W instead of the promised 160W.
Packs Bluetooth 5.0, USB sound card support, and 3.5mm AUX into a tiny 3-inch footprint.
Weighs just 154 grams with a metal shell, but the volume knob feels slightly cheap.
Best For
- Upgrading a dual-monitor home office setup with passive bookshelf speakers
- Adding Bluetooth 5.0 to an old pair of garage or workshop speakers
- Budget PC gaming setups needing a direct USB sound card connection
Not Recommended For
- Living room home theaters requiring deep bass or high-wattage floor-standing speakers
- Quiet environments where a loud power-on chime will wake up roommates
Watch Out For
- The 160W rating is a mathematical fantasy out of the box — the included 12V 5A adapter caps your actual power at 60W.
- You cannot disable the loud 'Bluetooth mode' and 'USB mode' voice announcements that play through your speakers.
- Plugging in the 3.5mm AUX cable physically disables the Bluetooth function until you unplug it.
- It emits a faint whining noise when idle, which is noticeable if your speakers sit two feet from your ears.
Full Specifications
| UPC | 761560627044 |
| ASIN | B072Q157FY |
| Brand | Facmogu |
| Voltage | 12 Volts (DC) |
| Material | Plastic |
| Item Weight | 1.11 pounds |
| Manufacturer | Mo-gu |
| Output Power | 160 Watts |
| Mounting Type | Freestanding |
| Item model number | SKU17021 |
| Number of Channels | 2 |
| Product Dimensions | 3.35 x 1.5 x 3.03 inches |
| Maximum Supply Voltage | 24 Volts (DC) |
| Minimum Supply Voltage | 9 Volts (DC) |
| Item dimensions L x W x H | 3.35 x 1.5 x 3.03 inches |
| Is Discontinued By Manufacturer | No |
What Buyers Say
The biggest shock for buyers is the loud, unskippable voice prompt announcing every mode change. The included 12V 5A power supply physically limits the amp to 60W, leaving buyers confused about the 160W marketing claims. Desk users love the 3-inch wide footprint because it hides perfectly under a monitor stand. The USB sound card feature works flawlessly on PCs without drivers, saving people from buying a separate DAC. Idle whining noises frequently pop up in reviews from people using highly sensitive speakers.
“it sounds fine for my garage speakers but the lady screaming BLUETOOTH MODE every time I turn it on makes me want to throw it at the wall.”
Common Praise
- Tiny 3x2.7-inch footprint takes up zero usable desk space
- USB input works instantly on Windows 10/11 without downloading drivers
- Includes every cable needed (AUX, RCA, USB) right in the box
- Bluetooth 5.0 connects instantly and holds a stable signal through walls
Common Complaints
- Loud 'Bluetooth Mode' voice prompt plays every time you turn it on
- Included 12V 5A power brick only delivers 60W, starving the 160W amp
- High-pitched whining noise bleeds through the speakers when audio is paused
- Plugging in the AUX cable completely disables the Bluetooth receiver
Ownership Tips
- The volume knob controls the voice prompt volume, so turn it down before switching inputs.
- Upgrading to a 24V laptop power supply completely changes the bass response and max volume.
- Leaving the amp powered on 24/7 prevents the annoying startup chime.
Frequently Asked Questions
Can I turn off the voice that says 'Bluetooth mode'?
No. The manufacturer hardcoded the voice prompts and power-on chime into the firmware, and they play at a fixed volume.
Will this output the full 160W advertised?
Not with the included plug. The box comes with a 12V 5A adapter, which mathematically limits the amp to 60W total output.
Can I connect my Amazon Echo Dot to this?
No. The manufacturer explicitly states this amplifier is not compatible with Amazon Echo, Alexa devices, or Bose speakers.
Does it support banana plugs?
Yes. The rear speaker terminals accept standard banana plugs as well as bare spliced wire.
Do I need to install drivers to use the USB input on my PC?
No. The USB connection is entirely plug-and-play and acts as an external sound card for Windows and Mac.
Buying Guide
You are buying a 60W amplifier, not a 160W amplifier, because of the included power brick. This unit is strictly for passive speakers with speaker wire terminals, not powered studio monitors. The mandatory voice prompts make this a bad choice for a bedroom where you might wake someone up. Treat the USB input as your primary PC connection to get the cleanest audio signal.
12V 5A Power Supply
Volts times amps equals watts. 12V x 5A = 60W. You physically cannot get 160W out of this amp without buying a bigger power brick.
TPA3116 Chip
This is the engine of the amplifier. It's a highly respected, efficient Class-D chip that runs cool and delivers clean sound for cheap.
4~8 Ohm Impedance
This tells you what speakers you can connect. Most standard bookshelf speakers fall in this range, like matching tires to a car.
Alternatives
Search for 'TPA3116 mini amplifier without voice prompts' if you want the same sound quality without the annoying announcements, or look for models including a 24V power supply for true 100W+ output.
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