We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.
DOWNLOAD THE APP
Customer Services
Copyright © 2025 Desertcart Holdings Limited
DOWNLOAD THE APP
🔊 Tiny Amp, Massive Impact: Power Your Sound Anywhere, Anytime!
The 5pcs Super Small Power Amplifier Board PAM8403 is a compact, dual-channel digital amplifier delivering 3W per channel at 90% efficiency. USB powered (2.5V-5.5V), it fits perfectly in small devices, offers noise-free sound, and includes advanced protection features—ideal for DIY audio projects, portable speakers, and retro tech upgrades.
| ASIN | B07P8Z3MRY |
| Best Sellers Rank | 21,733 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 113 in Hi-Fi Amplifiers |
| Brand | Fdit |
| Country Of Origin | China |
| Customer Reviews | 4.2 out of 5 stars 94 Reviews |
| Item Dimensions | 6 x 4 x 2 centimetres |
| Item dimensions L x W x H | 6 x 4 x 2 centimetres |
| Manufacturer | Fdit |
| Material | fr4 |
| Maximum Supply Voltage | 5.5 Volts (DC) |
| Maximum supply voltage | 5.5 Volts (DC) |
| Minimum Supply Voltage | 2.5 Volts (DC) |
| Minimum supply voltage | 2.5 Volts (DC) |
| Model Number | PAM8403 |
| Mounting Type | Surface Mount |
| Mounting type | Surface Mount |
| Number of Channels | 2 |
| Output Power | 3 Watts |
| Package Type Name | small carton or envelope |
| UPC | 783335872589 |
| Voltage | 5.5 Volts (DC) |
J**S
Make sure you supply the correct voltage.
Excellent. Good for Retro projects that require sound amplification.
A**E
Great for small audio projects.
Really simple. You can parallel the inputs to many of these IC with a pre-amp to drive lots of 3Watt 4ohm speakers and get decent sound volume. 1 x 18650 3500mAh lithium ion battery powers 2 units at the same time for 12watt pmpo for........drum rolll 3 days at mid volume. As these circuits run from 2.5-5.5 volts a li-po battery seemed perfect, if expenisve. They are REALLY efficient being a D type amplifier (85-90%) and draw 10's of milliamps @3.7v.
A**D
Tiny amplifiers great for all sorts of projects.
Extremely small, and work on as little as 2.6v, however just be aware they did get rather warm on 5v, I find they work very well with no heat on 3.7v range, no audio clipping, you can also run a pot in line with the signal input to get volume control, But these are tiny, decent audio quality, perfect for getting audio into your projects.
N**K
Surprisingly powerful for such a tiny amplifier.
Punches way above it's weight, perfect for small portable speaker projects.
I**N
Certainly will solve a problem for me. Great price.
Not tried them yet.
S**G
Brilliant
How can they build and ship these for the money ! Brilliant
S**H
Was good , too good , wasn't expecting the sound to be so loud , jumped out of my skin
Wired up to an original xbox with internal speakers these small power amps definitely pack a punch! Recommended , just a quick note be sure you have the correct voltage maybe a potentiometer connected at lowest volume setting and go from there
G**B
If you want a Buzzer these are it!
Absolutely the worst Amp board out there - Look Elswhere
Trustpilot
2 weeks ago
1 week ago