Mini Board Digital Power amplifier 5V 2 Channel 3W

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Features:
Can use the computer USB port 5V power supply
or using a mobile phone charger USB port 5V power supply,battery power can also be used
high efficiency:90%
can provide 3W (left channel) +3 W (right channel) output power in the 4 load and 5V power supply conditions
A class, B class amplifier such efficiency is only about 30%
D class amplifier is highly respected today
D class amplifier efficiency is extremely high, not because of temperature affect the sound quality
but do not add heat sink and take less space
noise canceling circuit was built in the amplifier board
power on / off without pop noise
module has a short-circuit current protection and over-temperature protection

Specifications:
Operating voltage: 2.5V-5.5V
Speaker With: 4-8ohms Recommended: 4 ohms
Speaker Power : 2-8W
Size:21 x 18 x 3.4mm(L x W x H)

Application:
LCD TVs, monitors,
Laptop
Portable Speakers
Portable DVD players, game consoles
Phone / speakerphone

https://www.youtube.com/watch?v=bVuy9ph9T4k

Dibawah ini conto vedeo alat diatas putar vedeo di bawah lalu resapi kehebatan alat di atas