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Description
HKD PAM8403 AUD AMPMicro Digital Amplifier Board 2 3W Class D PAM8403 Micro Digital Amplifier Board Features Can use 5V battery or any USB port to power. D class amplifier is highly respected today because its 90% high efficiency. A class, B class amplifier efficiency is only about 30%. Temperature does not affect the sound quality so no need to add heat sink therefore less space is taken. Module has a short circuit current protection and over temperature protection.
Micro Digital Amplifier Board 2 3W Class D PAM8403
Micro Digital Amplifier Board
Features
- Can use 5V battery or any USB port to power.
- D class amplifier is highly respected today because its 90% high efficiency. A class, B class amplifier efficiency is only about 30%.
- Temperature does not affect the sound quality so no need to add heat sink therefore less space is taken.
- Module has a short-circuit current protection and over-temperature protection.
- Noise canceling circuit was built in, power on / off without pop noise.
- Can provide 3W (left channel) + 3 W (right channel) output power in the 4Ω load and 5V power supply conditions.
Specifications
- User: Audio Module,mini digital amplifier
- Super Mini Size: 1.85 x 2.15cm
- Input voltage: 2.5-5V (can not be more than 5.5V, otherwise it will burn the IC on board)
- Output power: 2 channels x 3W
- Speaker Choice: It can work with 4 ohm and 8 ohm speakers, recommend 4 ohms.
- Net weight : 1g
Additional Information
| Device | Amplifier Board |
| Type | Micro Digital |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Great, affordable upgrade
Style: 36 Sqft 80 mil
Easy to use and install. Great upgrade
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 5
Nice sound deadening, self adhesive mats
Style: 18 Sqft 80 mil
These mats should work fine for my application. I’m applying it to the back sides of the hollow core doors on the closet where my HVAC is installed to reduce the “hum” from passing through. If I were sound deadening my automobile, I would probably use a heavier gage material. Overall, good product at a reasonable price.
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Reviewed in the United States on March 21, 2026
★★★★★ 5
Very good product
Style: 36 Sqft 80 mil
Easy to install, very sticky. Will buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 5
Works well and doesn’t break the bank
Style: 36 Sqft 80 mil
Awesome value for low budget wound deadening. Used this under the floor mat on my international 4300 and there is a noticeable difference in sound inside the cab.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
★★★★★ 5
It works
Style: 36 Sqft 80 mil
Great product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026