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

Feature Can use the computer USB port 5V power supply or using a mobile phone charger USB port 5V power supplyBattery power can also be usedHigh efficiency 90 Can provide 3W left channel 3W right channel output power in the 4 load and 5V power supply conditionsA class B class amplifier such efficiency is only about 30 D class amplifier is highly respected todayD class amplifier efficiency is extremely high not because of temperature affect the sound qualityBut do not add heat sink and take less space noise cancelling circuit was built in the amplifier boardPower on off without pop noiseModule has a short circuit current protection and over temperature protectionSpecification Operating Voltage 2 5V 5 5VSpeaker With 4Ohm 8Ohm recommended 4Ohm Speaker Power 2W 8WSize 21 x 18 x 3 4mm L x W x H Net Weight 1gApplication LCD TVs monitorsLaptopPortable SpeakersPortable DVD players game consolesPhone speakerphoneNote 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