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

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