10PCs Efficient Mini Digital Channel Mini PAM8403 D 2*3W USB Power Amplifier Board Audio Module

Label:Yes Module has a short-circuit current protection and over-temperature protection LCD TVs,monitors Power on / off without pop noise A class, B class amplifier such efficiency is only about 30% D class amplifier efficiency is extremely high, not because of temperature affect the sound quality Speaker Power :2-8W Phone / speakerphone Color:As the picture shown But do not add heat sink and take less space Noise canceling circuit was built in the amplifier board Can provide 3W (left channel) +3 W (right channel) output power in the 4Ω load and 5V power supply conditions High efficiency:90% Portable DVD players, game consoles Operating voltage: 2.5V-5.5V Laptop or using a mobile phone charger USB port 5V power supply D class amplifier is highly respected today Speaker With:4-8ohms recommended:4 ohms Size:As the picture shown Battery power can also be used Can use the computer USB port 5V power supply Portable Speakers Package Contents:10 x Amplifier Boards