Sell 5PCS PAM8403 Mini Digital Amplifier Board 2 * 3W Class D Digital 2.5V To 5V Power Amplifier Board best price

Product Description: PAM8403 mini D class digital amplifier board 1. Working voltage: 2.5V-5.5V.Note: the power supply voltage should not exceed 5.5V, and the power supply should not be connected in reverse. 2. Speakers: 4-8 Euros, recommended: 4 Euros;Horn power: 2-8W. 3. Can use computer USB port 5V power supply, or use mobile phone charger USB port 5V power supply, can also use lithium battery power supply. 4. High efficiency 90%, 4Ω load and 5V power supply conditions, can provide 3W (left channel) +3W (right channel) output power.The efficiency of class A, class B and other power amplifier is only about 30%, and class D power amplifier is highly respected under the current green tide. 5. Class D power amplifier has high efficiency, which will not affect the sound quality because of the temperature rise. Moreover, it does not need to add heat sink and occupies a small volume. Application: LCD TV sets, monitors Notebook computer Portable loudspeaker Portable DVD player, game console Cell phone/hands-free phone 2. Notes for Use: Connect the speaker first and then connect the power supply, otherwise it is easy to cause damage to the chip; Because the digital volume control in the module has a large gain, do not let the audio signal input is too large to cause the signal to produce a cut limit.