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PAM8403 Miniature Digital USB Power Amplifier Board 2.5V – 5V D Type 2 x 3W dual channel


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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

68.00 139.00 ( inclu.GST)

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Large output power, energy sufficient, good quality, can directly drive 4 Ω or 8 Ω small speakers
Good noise suppression you will hear nothing from the loudspeaker if there is no audio input
Your can charge this board directly with your computer or mobile phone USB
Super mini design can be easily placed in a variety of digital products
The whole board adopts machine welding with high quality stand
The negative pole of left and right channels output end cannot connect together!

SKU: S012 Category:
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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

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