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Mini Digital Power Amplifier Board 2x3W Class D Audio Module USB DC 5V PAM8403

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                  Feature:

                  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) + 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%
                  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 cancelling circuit was built in the amplifier board
                  Power on / off without pop noise
                  Module has a short-circuit current protection and over-temperature protection

                  Specification:

                  Operating Voltage: 2.5V ~ 5.5V
                  Speaker With: 4Ohm ~ 8Ohm (recommended: 4Ohm)
                  Speaker Power: 2W ~ 8W
                  Size: 21 x 18 x 3.4mm (L x W x H)
                  Net Weight: 1g

                  Application:

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

                  Note:

                  First turn OFF and then powered speakers , or likely to cause damage to the chip;
                  Because digital volume control module has a great gain , so do not let too much leaving the audio signal input signal cut limiter.

                  Package included:

                  1 x Mini Amplifier Board

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