pam8403 Amplifier Board Audio Dual-channel 2*3W Miniature Power Amplifier
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Air freight costs are based on the weight of the product (including packaging bags and cushioning materials). For products under 2kg, freight is calculated in 50g increments. For products between 2kg and 4kg, freight is calculated in 100g increments. For products over 4kg, freight is calculated in 1kg increments.
If your order exceeds 4kg or the shipping cost exceeds $70, we recommend contacting our customer service for an accurate shipping quote. You will need to provide your zip code address when you contact us.
Air freight options include DHL, UPS, FedEx, and Yun Express, with a delivery time of 7-12 days.
When the weight of the express delivery exceeds 12kg or air shipping cost exceeds US$100 or sea shipping cost exceeds US$50, you can choose B2B shipping:
Air freight(10-14 days)
Yun quik boat sea freight (15-20 days)
Quik boat sea freight(20-25 days).
Air freight B2B express |
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| US Area | Unit Price | Date | Last-mile Delivery |
| Western United States (zip codes starting with 8 or 9) |
US$7.5/kg + US$2 | 10-15 days | UPS / FEDEX / GOFO |
| Central United States (zip codes starting with 4, 5, 6, or 7) |
US$8.5/kg + US$2 | ||
| Eastern United States (zip codes starting with 0, 1, 2, or 3) |
US$9.0/kg + US$2 | ||
Yun quit boat sea freight B2B express |
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| US Area | Unit Price | Date | Last-mile Delivery |
| Western United States (zip codes starting with 8 or 9) |
US$3.4/kg + US$2 | 15-20 days | UPS / FEDEX / GOFO |
| Central United States (zip codes starting with 4, 5, 6, or 7) |
US$3.6/kg + US$2 | ||
| Eastern United States (zip codes starting with 0, 1, 2, or 3) |
US$3.8/kg + US$2 | ||
Quit boat sea freight B2B express |
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| US Area | Unit Price | Date | Last-mile Delivery |
| Western United States (zip codes starting with 8 or 9) |
US$2.6/kg + US$2 | 20-25 days | UPS / FEDEX / GOFO |
| Central United States (zip codes starting with 4, 5, 6, or 7) |
US$2.8/kg + US$2 | ||
| Eastern United States (zip codes starting with 0, 1, 2, or 3) |
US$3.0/kg + US$2 | ||
Processing starts after your payment confirmed. Normally, it needs 2-5 days. The processing time depends on the quantity of items.
The PA8403 Miniature Power Amplifier board features excellent noise suppression; even with no audio input, you won't hear any noise with your ear pressed against the speaker. It offers dual-channel stereo sound, outputting 3W+3W power from a mere 5V supply, directly driving 4Ω or 8Ω speakers. It boasts high output power, ample energy, and excellent sound quality. Its unique Class D digital power board without LC filtering allows for direct USB power supply from a computer. Double-sided wiring effectively solves ground potential imbalance and crosstalk issues caused by wiring. Its ultra-miniature design allows for easy placement in the small spaces inside various digital products, offering extremely high amplification efficiency. All boards are machine-soldered, resulting in soldering quality far superior to hand soldering!
Dimensions: 1.85*2.11cm
Speaker Compatibility: 4-8 ohms, 4 ohms recommended
Speaker Power: 2-8W
Rated Operating Voltage: 2.5V～5V, Maximum Operating Voltage: 5.5V. Do not exceed 5.5V power supply voltage. Do not reverse the positive and negative terminals of the power supply.
With a high efficiency of 90%, it can provide 3W (left channel) + 3W (right channel) output power under 4Ω load and 5V power supply conditions. Class A and Class B amplifiers have an efficiency of only around 30%, making Class D amplifiers highly sought after in today's green trend.
Class D amplifiers are highly efficient, their sound quality is not affected by temperature rise, and they do not require heatsinks, resulting in a very small footprint.
The amplifier board has built-in noise reduction circuitry, eliminating crackling noise during power-on/off; the module has short-circuit, overcurrent, and overtemperature protection.
Board Dimensions: ★★★★ Ultra-compact size: 1.85*2.11cm ★★★★
Note: The amplifier board can be powered by a computer, but this will generate noise (some customers may not experience any noise at all). Independent power supply is highly recommended.
The negative terminals of the left and right channel outputs must not be connected together, otherwise the ICs will be damaged. The active speakers (load) should be connected first.