PAM8403 Mini 5V Digital Power Amplifier Board With Switch

PAM8403 Super Mini 5V Digital Amplifier Board 3W x 2 USB Powered Volume Control Operating Voltage: 2.5V-5.5V.
Note : Do not exceed the supply voltage 5.5V, do not reverse the positive and negative power supply.
Speaker: 4-8Ohm. Speaker Power :2-8W.
Can be powered by 5V USB, or cell phone charger USB port 5V, Lithium battery power also.
High efficiency of 90%, 4Ohm load and 5V power supply conditions, can provide 3W ( left channel ) +3 W ( right channel ) output power.
The efficiency of power amplifier Class A and Class B is only at 30%, Class D amplifier is respected in today's green trend.
Class D amplifier efficiency is very good, the sound quality will be not affected by temperature, and it works still very well even if without additional heat sink.
Built-in noise canceling circuit, short circuit current protection and over-temperature protection.
PAM8403 Mini Power Amplifier Board
Operating voltage: DC 2.5-5.5V
Max output: 3Wx2 (5V 4Ohm)
Max output: 3Wx2 (5V 4Ohm) Efficiency: 90%
Material:Metal
size:29.5 x 20.2 x 15mm
Colour:Green
Package Contents: 1 x digital power amplifier board
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
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