3Pcs PAM8403 Mini Digital Power Amplifier Board Class D Audio Module USB DC 5V 2x3W
3Pcs PAM8403 Mini Digital Power Amplifier Board Class D Audio Module USB DC 5V 2x3WFeature: 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 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: 3 x 2 x 3W class D Mini Amplifier Board
