3W Digital Power PAM8403 D Audio Amplifier USB DC 5V

Description

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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)
• Color:As the pics show
• Net weight:1g

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

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