PAM8403 Class D stereo amplifier Circute Board
an use the computer USB port 5V power supply or using a mobile phone charger USB port 5V power সুপ্পল্য
Battery power can also be used
High efficiency: 90%
Can provide 3W (left channel) + 3W (right channel) output power in the 4Ω load and 5V power supply conditions
A class, B class amplifier such efficiency is only about 30%
