Jrifedptry 5 Pcs Digital Power Amplifier Board,2X3W Type D PAM8403 Audio Module DC 5V Digital Audio Amplifier Board Module

PAM8403 mini type:2.3 x 1.8cm/0.9 x 0.7in,can be easily put in small space of many digital products,high amplification efficiency High efficiency 90%, can provide 3W (left channel)+3W (right channel) when using 4ohm load and 5V power supply. It can be powered by computer USB 5V, or phone charger 5V, or lithium battery. Type D power amplifier has very high amplification efficiency, sound quality not be effected by temperature rise, no need of heat sink. Build-in noise reduction circuit, no noise when power on/off, supports short circuit, over current and over temperature protection.